Answer:
see below
Step-by-step explanation:
She got 3 questions wrong
3*5 = 15
She missed 15 points
40-15 = 25
She got 25 points right
25/40 =.625 =62.5%
If she got x questions wrong
5x is the points missed
40 -5x is the points correct
(40-5x)/40 = score
Answer:
25pts
Step-by-step explanation:
what is the answer for this question? number 5 and 6
Answer:
The answer to question 5 is x = 23. The answer to question 6 is x = 17.
Step-by-step explanation:
Two Key Points:
- Angles on a straight line always add up to 180°
- The angles in the inside of a triangle add up to 180°
I have attached a picture showing how to do the two problems. I hope this helps!
if h (x) = -4x^2 + 3x + 10, find h (-2)
Answer: -12
Step-by-step explanation:
Input -2 into the function for where you see x and solve to find out what h(-2) is
h(-2) = -4(-2)^2 + 3(-2) +10
h(-2) = -4(4) -6 + 10
h(-2) = -16 -6 +10
h(-2) = -22 + 10
h(-2) = -12
round the prices to the nearest dollar. use the rounded prices to estimate the total bill. Crackers $1.28, Cheese $8.92, Jam $ 3.77, Butter $9.34.
Answer:
Crackers $1
Cheese $9
Jam $4
Butter $9
1+9+4+9
= $23
Given segment CE and point D that lies on CE, find CD if CE = 15, CD = 30 + 3x, and ED = 25 + 2x
The two figures below, a regular hexagon and a regular pentagon, have the same
perimeter. What is the length of a side of the pentagon?
Answer:
69
Step-by-step explanation:
Perimeter = sum of all sides of a regular polygon = the number of sides*length of a side
Length of a side of the given regular hexagon = 3x + 5
Perimeter of hexagon = 6(3x + 5) = 6(3x) + 6(5) = 18x + 30
Length of a side of the given regular pentagon = 4x - 1
Perimeter of pentagon = 5(4x - 1) = 5(4x) - 5(1) = 20x - 5
Since we are told that the perimeter of the regular hexagon is the same as that of the regular pentagon, therefore:
18x + 30 = 20x - 5
Solve for x.
Subtract 20x from both sides
18x + 30 - 20x = 20x - 5 - 20x
-2x + 30 = -5
Subtract 30 from both sides
-2x+ 30 - 30 = -5 - 30
-2x = -35
Divide both sides by -2
x = -35/-2
x = 17.5
Length of a side of pentagon = 4x - 1
Plug in the value of x
4(17.5) - 1 = 70 - 1 = 69
length of a side of the pentagon = 69
Add and subtract fraction
Answer:
1. 23/20 or 1 whole and 3/20
2. 3/10
3. 4/3 or 1 whole and 1/3
4. 1/15
5. 1/2
6. 3/10
2 buckets an 800 balls how many ball will fit in each bucket
Answer:
400 balls in each bucket
Step-by-step explanation:
800 (balls) divided by 2 (buckets)
Answer:
do 800/2
Step-by-step explanation:
what is the answer to this?
[tex]3.14(7) \div 3 + 512 \div 24[/tex]
4.06/x = 0.18/0.5 please could you answer
Answer:
x=203/18
Step-by-step explanation:
convert the decimal into a fraction
203/50/x = 9/50 / 1/2
simply the complex fraction:
203/50x = 9/25
cross multiply
450x = 5075
divide both sides by 450:
x= 203/18
Answer:
X=11.2778
Step-by-step explanation:
4.06/X=0.18/0.5
cross multiply
0.18×X=4.06×0.5
0.18X=2.03
divide both sides by 0.18
0.18X/0.18=2.03/0.18
it becomes
X=2.03/0.18
X is therefore 11.2778
4. Factor x2 - 4x – 32.
Answer:
(x - 8)(x + 4)
Step-by-step explanation:
We need to find something that multiplies to 32 and adds up to 4.
The 2 special numbers would be -8 and 4.
-8(4) = -32
-8 + 4 = -4
We then simply write out the factored form:
(x - 8)(x + 4)
Answer: (x+4)(x-8)
Step-by-step explanation:
x^2 - 4x -32 Find two numbers that their product is -32 and their sum is -4. The numbers -8 and 4 will work out because -8 times 4 is -32 and -8 plus 4 is -4.
Now rewrite the whole polynomial as
x^2 +4x -8x -32 Now group them
(x^2 +4x) (-8x -32) Now factor each side
x(x +4) -8(x +4) factor out x+4
(x+4)(x-8)
Owen bought 7 pounds of bananas for
$8.75. Olive bought 10 pounds of
grapes for $12. How much lower was
Olive's unit rate than Owen's unit rate?
Answer:
$0.05/lb
Step-by-step explanation:
What Owen paid, per pound: ($8.75) / (7 lb) = $1.25/lb
What Olive paid, per pound: ($12) / (10 lb) = $1.20/lb
Olive's unit rate was $0.05/lb lower than Owen's.
A pizza store office three special pizza special number one is a square pizza with a side length of 14.8 inches that cost is $15 special number two is a round pizza with diameter 13 in that cost $12 special three is rectangler Pizza with length square root of 4 inches in width 200 square root inches that cause somebody to dollar switch special is the best deal and the worst deal
Answer:
the 1st pizza is the better deal
Step-by-step explanation:
I really need help on this. >.
Answer:
∠ D = 48°
Step-by-step explanation:
Since AC ~ BC then Δ ABC is isosceles and the base angles are equal, thus
∠ B = ∠ C = 69°, then
∠ ACB = 180° - (69 + 69)° = 180° - 138° = 42° ( sum of angles in Δ )
∠ DCE = ∠ ACB = 42° ( vertical angles )
∠ D = 180° - (90 + 42)° = 180° - 132° = 48°
Shawna is making smoothies. The recipe calls for two parts yogurt to three parts blueberry. Shawna wants to make 10 cups of smoothie. Mix how many cups of yogurt and blueberries does Shawna need
Answer:
Shawna needs a mix of 4 cups of yoghurt and 6 cups of blueberries
Step-by-step explanation:
Here, we want to know the number of cups of yoghurt and smoothies Shawna needs to make;
We have 2 parts yoghurt and 3 parts blueberry, so we can say we have a ratio of 2:3
The total number of cups to be made is 10
So the number of cups of yoghurt will be;
2/(2+3) * 10
= 2/5 * 10 = 4 cups
The number of cups of blueberry would be;
3/5 * 10 = 6 cups
So a mix of 4 cups of yoghurt and 6 cups of blueberries is needed by Shawna
The moon is 250,000 miles away. How many inches is it away from earth?
Answer:
the moon is 15,840,000,000 inches away
Step-by-step explanation:
The distance of the moon from the earth in inches is 1583926.56 ×10⁴ inches.
What is the unitary method?The unitary method is a method in which you find the value of a unit and then the value of a required number of units.
Given here, The moon is 250,000 miles away. How many inches and
we know that 1 mile =63357.0626 miles
Thus 250000 mile = 1583926.56 ×10⁴
Hence, The distance of the moon from the earth in inches is 1583926.56 ×10⁴ inches.
Learn more about the unitary method here;
https://brainly.com/question/22056199
#SPJ2
at 1pm there are 16 seagulls at 3pm there are 40 how many increased in 2 hours
Answer:
24
Step-by-step explanation:
40-16=24 ( brainlist? ) and your welcome!
could someone help me with this maths question?
Answer:
x=69° ,y=69° is the answer
Step-by-step explanation:
Hope it is helpful for you
please follow me
Answer: X = 69° and Y = 111°
Step-by-step explanation: X is a z-angles which makes it the same as the given angles. Y is a corresponding angle which makes it the same as the above angle 111°.
we have 10 marbles. five are blue Five are red. we select three marbles. what are the odds (in percent) that all three chosen are red?
Answer:
12.5%
Step-by-step explanation:
Step 1:
We need to find out the percentage of picking a marble that is red. In total, there are 10 marbles, and there are 5 red. To find the probability of picking a red marble, you need to do:
# of red / total marbles.
There are 5 red marbles and 10 total marbles, so the probability of getting a red marble is 5/10, and you can simplify it to 1/2 (5/10 * 5/5).
Step 2:
Now we can start finding the probability of finding the probability of choosing three red marbles in a row. Since we need to find the probability of choosing red marbles three times, you can multiply 1/2 by itself 3 times (1/2 * 1/2 * 1/2).
1/2 * 1/2 * 1/2 = 1/8
Step 3:
Now we need to convert the fraction into a percentage. You can find the percentage by dividing 1 by 8. You should get 0.125, and you can multiply 0.125 by 100, and your final answer should be 12.5%.
Rewrite this formula to convert Fahrenheit to Celsius. F= 9/5C + 35
Answer:
[tex] \huge \purple { \boxed{ C = \frac{5}{9} ( F - 32)}}[/tex]
Step-by-step explanation:
I the given problem, there should be 32 in place of 35.
[tex]F = \frac{9}{5} C + 32 \\ F - 32= \frac{9}{5} C \\ 5( F - 32)= 9 C \\ \frac{5}{9} ( F - 32)=C \\ \\ \huge \red{ \boxed{ C = \frac{5}{9} ( F - 32)}}[/tex]
find the distance between points (2,5) and (-2,2)
Answer:
5
Step-by-step explanation:
Let :
x(1) be 2
y(1) be 5
x(2) be -2
y(2) be 2
We know that distance between any 2 points is equal to:-
[tex] \sqrt{{(x(2) - x(1) )}^{2} + ({y(2) - y(1))}^{2} } [/tex]
So using the above formula ,
[tex] \sqrt{ {( - 2 - 2)}^{2} + {(2 - 5)}^{2} } [/tex]
[tex] = > \sqrt{ {( - 4)}^{2} + {( - 3)}^{2} } [/tex]
[tex] = > \sqrt{16 + 9} [/tex]
[tex] = > \sqrt{25} = 5[/tex]
Which can be used to prove that lines are parallel? 1.Vertical Angle Theorem 2.Alternate Interior Angles Theorem 3.Converse of Corresponding Angles Postulate 4.Converse of Same-Side Interior Angles Theorem
Answer:
4. Converse of Corresponding Angles Postulate
Step-by-step explanation:
There are several theorems to prove line relationships in plane geometry.
The proof of parallel lines is done by
(3) Converse of Corresponding Angles Postulate(4) Converse of Same-Side Interior Angles TheoremTo prove that lines are parallel, we make use of the concept of line transversal.
The vertical angle theorem is based on two lines intersecting at a point
The alternate interior angle theorem is used to determine the congruence of angles in a transversal of parallel lines
The converse of corresponding angles postulate, and the converse of same-side interior angles theorem are used to determine if lines are parallel based on the angles on the transversal.
Hence, the true options are (3) and (4)
Read more about parallel lines at:
https://brainly.com/question/2973276
HELP ME PLZ !! First one who answer these right gets brainliest !
Answer:
3. z = 0
I could only find the answer for number 3. I'm sorry! I hope this helps anyway!
Answer:
It might be very wrong
3. 6z + 12 = 30z + 12
0 = 24z
z = 0
4. 3x +3 +1 +2x = 4x +4+ x
4 +5x = 5x +4
0 = 0
5. - 2b = - 2b +4+3-3
0 = 4
What is the slope of the line that contains these points? x| -7. -6. -5. -4 ------------------------------------------------------------- y| 21. 17. 13. 9
Answer:
-4Step-by-step explanation:
Given the line containing the points.
x | -7. -6. -5. -4
y | 21. 17. 13. 9
The slope of the line is expressed as m = Δy/Δx = y₂-y₁/x₂-x₁
Using the coordinates y (21, 17) and corresponding value of x(-7, -6)
y₁ = 21, y₂ = 17 x₁ = -7, x₂ = -6
Substituting the values into the formula for calculating the slope, we have;
m = Δy/Δx = 17-21/-6-(-7)
m = -4/-6+7
m = -4/1
m = -4
Hence the slope of the line that contains these points is -4
Compute the scale factor of the new scale drawing (SD2) to the first scale drawing (SD1) using the information from the given scale drawings.
Answer:
a) 1/48
b) 36/1
Step-by-step explanation:
The scale factor from 2nd to 1st is the ratio of the scale factors.
(a) (1/280)/(6/35) = (1/280)(35/6) = 35/(35·8·6) = 1/48
__
(b) (3)/(1/12) = 3·12/1 = 36/1
(9x+1/2)+(7x-9 1/12)
Step-by-step explanation:
Input Equation can be rewritten:
= (9*1/2)+(7*-91/12)
= (9/2)+(7*-91/12)
= (4.5)+(7*-91/12)
= 4.5+(7*-91/12)
= 4.5+(-637/12)
= 4.5+(-53.083333333333)
= 4.5+-53.083333333333
= 4.5-53.083333333333
= -48.583333333333
hope this helps!
Answer:
16x-103/12
Step-by-step explanation:
(9x+1/2)+(7x-9 1/12)
9x+1/2+(7x-109/12)
remove parenthesis
9x+1/2+&x-109/12
combine like terms and differences.
16x-103/12
Which expression is equivalent to 8x + 14 + 9x - 5
Answer:
Step-by-step explanation:
17x + 9
Solve d + (-d)
A. -2d
B. 0
C. d
D. 2d
Answer:
B. 0
Step-by-step explanation:
=>d+(-d)
=>d-d
=>0
Answer:
The answer is B. 0
Step-by-step explanation:
If the problem is d + (-d), then the answer is 0. Suppose that d = 7. Then it would be 7 + (-7), which is 0. You can't get any other number from that equation unless you do d + d or d - d.
Hope this helps.
* pleasegive me brainliest, i only need four more *
. Look at the figure. Which ray is opposite of DE ?
A property insurance policy is issued at a total cost of $2,540 for 6 months. If the insurance company offers a one-time $50 rebate, what is the cost per month?
Answer:
$431.67
Step-by-step explanation:
Let
The one time $50 rebate be for the first month
Cost of insurance per month = x
First month cost of insurance = x-50
Total cost of insurance = $2,540
Total cost of insurance = 1st + 2nd + 3rd + 4th + 5th + 6th
2,540 = x-50 + x + x + x + x + x
2540 + 50 = 6x
2590 = 6x
Divide both sides by 6
x= 2,590 / 6
= 431.67
x= $431,67
The cost of the insurance per month = $431.67
Check:
$431.67 * 6 months
=$2,590.02
Minus one time rebate of $50
= $2,590.02 - $50
= $2,540.02
Approximately
$2,540
A police officer monitored the speed (mph) of the cars in a particular traffic area.
Prepare a frequency distribution for this data using 7 classes.
36, 21, 27, 24, 54, 28 ,36, 43,
22, 29, 37, 40, 26, 25, 38, 23,
44, 30, 26, 39, 37, 40, 38, 36,
41, 45, 52, 42, 43, 42, 48, 50, 53
Answer:
03/23/2020
OverdueLPercents and Fractions--Assigned
Spelling 600
DueTypeTitleScoreStatus
04/13/2020
OverdueTUnit Test--Assigned
Step-by-step explanation:
03/23/2020
OverdueLPercents and Fractions--Assigned
Spelling 600
DueTypeTitleScoreStatus
04/13/2020
OverdueTUnit Test--Assigned
Answer:
20-25: 5
26-30: 5
31-35: 0
36-40: 10
41-45: 7
46-50: 2
51-55: 4
Step-by-step explanation:
The answer is
20-25: 5
26-30: 5
31-35: 0
36-40: 10
41-45: 7
46-50: 2
51-55: 4
because to solve this problem you must make seven intervals and sort the numbers into those seven intervals.