A 7th grade student answered 81 questions correctly on a 90-question test.
What percent of the questions did she answer correctly?
What percent were incorrect?​

Answer: y^2 -5 + y^2 -5 + 3y^2+7y+8 + 3y^2+7y+8

Step-by-step explanation: The order doesn't matter but... its just the sides added up together. Its a rectangle so the opposites are equal. You were given 2 sides and thats all you need, just repeat it. L plus l plus w plus w is there.

Answer:

P= 8y^2+14y+6

Step-by-step explanation:

Multiply the given expressions by 2.

Then add your two products together.

Answer:

Step-by-step explanation:

Simply we know this is an isosceles triangle meaning that:

The other angle is also 35.

With this information, we can say that as a triangle adds up to 180, we can put this in a formula:

x+35+35 = 180

x+70 = 180

x = 110

Answer:

5/6

Step-by-step explanation:

mental math

Answer:

92

Step-by-step explanation:

92+88= 180 all suplementtary angles =180

Answer:

92

Step-by-step explanation:

∠X And ∠Y are supplementary.

• Measure of ∠Y = 88°.

• We have to find measure of ∠X.

• Sum of 2 supplementary angles is always = 180°.

  X+Y=180

X+88=180

X=180-88

X=92

Answer:

Box A

Step-by-step explanation:

Answer:

$15 for 5 cupcakes

Answer:

9/10y

Step-by-step explanation:

Somewhat inconclusive hope this helps!

Answer:

[tex]\frac{9}{10} y[/tex]

Step-by-step explanation:

[tex]\frac{2}{5}y +\frac{1}{2} y\\\\\frac{4}{10}y +\frac{5}{10} y\\\\\frac{9}{10} y[/tex]

Answer:

-60

Step-by-step explanation:

Well just follow the equation from left to right

Add it all up.

5 thousand with alot of zeros

Step-by-step explanation:

how do you write an equation for the graph of y=cos x translated up 2 units and left pi units

Answer:

1. 14m, 11, 18m

2. 132 (rounded from 131.946)

3. Quadrilateral (duh it has 4 sides) and a rhombus?

Step-by-step explanation:

1 a unique triangle is a triangle with side lengths that are ALMOST exactly like a triangle. I used the pyragothem theory (a^2 + b^2 equals c^2) and this one was soo close to 18 (17.8)

2 the equation for the circumference of a circle is C=dpi. the radius is half of the diameter so 21 time 2 is 42 then multi[ply by pi.

3 is definitely already a quadrilateral (all of them have 4 sides) and the only shade i can think of that can have a 130 degrees for 2 angles would be a longgg rhombus ( or diamond)

Answer:

the answer is d 41

Step-by-step explanation:

Answer:

12 possible outcomes

Step-by-step explanation:

If she's spinning them at the same time, this is how you do it:

There are 3 possible outcomes on the first spinner- Walk, Run, and Stop.

There are 4 outcomes on the second spinner- Red, Green, Blue, and Orange.

Since they're being spun at the same time, we need to consider all of the possible combinations, for example:

Walk & Red.

Walk & Green.

Walk & Blue.

Walk & Orange.

And so on.  Each outcome on the first gets multiplied by 4, since there are 4 sections on the 2nd spinner.  Same thing if you did it and switched- the 4 sections on the second spinner would each have 3 different outcomes.

In conclusion, you'd just multiply 3×4, and there you go.  Or, you can think of it as 4+4+4, if that's a little easier to understand.

Answer:

ST = 44.5 feet

Step-by-step explanation:

sing SOH CAH TOA to solve the problem;

Given

m<T  = 90

m<R = 39 degrees

TR = 55feet

Required

ST = opposite to m<R

TR is the adjacent

tan theta = opp/adj

tan m<R = ST/TR

tan 39 = ST/55

ST = 55tan39

ST  = 55*0.8098

ST = 44.5 feet

Answer:

24 customers bought 3+ items.

Step-by-step explanation:

80% of 150 = 120

39/120 bought 1 item

57/120 bought 2 items

39 + 57 = 96

120 - 96 = 24

24 customers bought 3+ items.

Hope this helps! :)

the slopes of the sides do not matter. It's the fact that AD and BC are parallel and AB and DC are NOT parallel that determines it to be a trapezoid.

Answer:

Yes

Step-by-step explanation:

I believe it would be :) sorry if it's wrong I'm just a 8th grader

Answer: if you're solving by x it would be x=43/2

Step-by-step explanation:

Answer:

y = 4.

Step-by-step explanation:

I suppose that this question relates to the image that can be seen below.

In the image, the green line represents the exponential function and the blue line represents the linear function.

The y-value after which the exponential function will always be greater than the linear function is the y-value where bot graphs intersect, such that after that point, the blue line starts increasing fast, and is always above the green line.

In this case, this point is the second intersection, and we can see that this intersection happens in the point (2, 4)

Remember that the usual notation for points is (x, y).

Then the y-value after which the exponential function will always be greater than the linear function is y = 4.

Answer:

96 windows

Step-by-step explanation:

[tex]\frac{32}{2} =\frac{x}{6} \\\\2x=192\\x=96[/tex]

Answer:

96

Step-by-step explanation:

Answer:

Step-by-step explanation:

ratio of sides=8/3

perimeter of larger square=8/3 ×12=32 mm

Answer:

[tex]10000[/tex] meters

Step-by-step explanation:

The formula for finding distance is ([tex](speed)*(time)=(distance)[/tex]). Substitute in the given values and solve to find the distance,

[tex](20)*(500)=10000[/tex]

Answer:

$12.50

Step-by-step explanation:

100%-20% -> $10

80% -> $10

100% -> [tex]\frac{100}{80}[/tex] × $10 = $12.50

Answer:

The original price was $12

Answer:

Before Tax Price: $28.00

Sale Tax: 8.00% or $2.24

After Tax Price: $30.24

heart if it helped you

Answer:

f(2)= -4 f(3)= 1

Step-by-step explanation:

Answer:

18 and 72

Step-by-step explanation:

4x+x=90

5x=90

divided by 5

x=18

for the first side, since you only have x, you put 18

for the second one, since 4x, 4(18)=72

hope this helps!

Answer:

14/24 ( simplified = 7/12)

Step-by-step explanation:

to find this we multiply the fractions 2/3 and 7/8

7/8 x 2/3 = 14/24

So Shannon ate 14/24 lb

You can simplify to = 7/12

Answer:

150

Step-by-step explanation:

80 / 2 = 4. 4 * 5 = 200. 200 / 4 = 50. 50 * 3 = 150