Ask question

Ask question

All categories

Natali5045456 [20]

3 years ago

6

destiny answered 57 problems on a test correctly ans received a grade of 95%. How many problems were on the test if all the prob

lems were worth the same number of points?

1 answer:

weeeeeb [17]3 years ago

5 0

Answer:

req no of problem=60

Step-by-step explanation:

let x be the no of problem

ac/ques, $x\times0.95$ =57

95x=5700

x= $\frac{5700}{95}$

x=60

You might be interested in

which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 2x – 1 into the quadratic formula below

irinina [24]

$0 = 4x^2+2x- 1$

Quadratic formula is

$x = \frac{-b+-\sqrt{b^2-4ac}}{2a}$

'a' is the coefficient of x^2 = 4

'b' is the coefficient of x = 2

'c' is the constant = -1

Now we plug in all the values in quadratic formula

$x = \frac{-b+-\sqrt{b^2-4ac}}{2a}$

$x = \frac{-2+-\sqrt{2^2-4(4)(-1)}}{2(4)}$

$x = \frac{-2+-\sqrt{18}}{8}$

The above one is the substitution of values of a,b,c in quadratic formula.

5 0

3 years ago

Read 2 more answers

Rheld 1.org bookmarks

boyakko [2]

Answer:

800 cubic inches

Step-by-step explanation:

So all we need to do is:

1) find the volume of 1 cube

2) multiply it by 100, because 100 cubes make up the prism

SO 1)

The volume of cube = side * side * side = 2*2*2 = 8 cubic inches

SO 2)

The volume of prism = 100 * vol(cube) = 100 *8 = 800 cubic inches

ANSWER: 800 cubic inches

6 0

4 years ago

5.) Juan answered

vlada-n [284]

Answer:

Step-by-step explanation:

Depends on how many problems his quiz contains and how many problems he answered correctly.

5 0

3 years ago

Alaina bought a square frame for her desk that has an area of 81 square inches. What is the perimeter of the frame? (answer shou

babymother [125]

Given:

Area of a square frame = 81 square inches.

To find:

Perimeter of the frame.

Solution:

Let length of each side of the frame = a inches.

Area of square frame is

$Area=a^2$

$81=a^2$

Taking square root on both sides,

$\pm\sqrt{81}=a$

$\pm 9=a$

Side length cannot be negative. So, a=9 inches.

Perimeter of frame is

$Perimeter=4a$

$Perimeter=4(9)$

$Perimeter=36$

Therefore, the perimeter is 36 inches.

3 0

3 years ago

P(x)=x^3−4x^2+cx+2 (x-2) find c

Lubov Fominskaja [6]

I already answered a question but it didn’t count I guess

6 0

4 years ago