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4 years ago

How many questions do you have to get right out of 20 to get 70%?

Mathematics

1 answer:

sp2606 [1]4 years ago

4 0

To get the answer you set up a problem such as x/20=.70

x/20=.70 | Times .70 by 20
14/20=.70

You might be interested in

What is the reference angle for 192º?

Aleonysh [2.5K]

Answer:

78º

Step-by-step explanation:

Note : -

In mathematics, the reference angle is defined as the acute angle and it is measuring less than 90 degrees. It is always the smallest angle, and it makes the terminal side of an angle with the

x - axis.

Step 1 : -

Find where 192º lies in which quadrant.

192º lies in 3rd quadrant ( between

180º and 270º )

Step 2 : -

Subtract : 270 - 192

270 - 192 = 78º

( Since, 192º is greater than 180º, is subtracted from 270º )

Answer : -

78º is the reference angle for 192º.

3 0

2 years ago

for each problem, define the variable, write and inequality and find the solution. Ian needs to save at least $85.00 for a new p

tresset_1 [31]

Answer:

he'll need to save for 5 weeks to get $85

Step-by-step explanation:

hope this helps :)

6 0

3 years ago

The total cost in dollars to buy uniforms for the players on a volleyball team can be found using the function y=34.95x+6.25, wh

Ber [7]

The function we have is:

$y=34.95x+6.25$

This is a linear function.

We can find the slope (the rate of change) of this function, by comparing it to the general slope-intercept equation:

$y=mx+b$

Where m is the slope (rate of change) and b is the y-intercept of the line.

By comparison, we see that m an b are:

$\begin{gathered} m=34.95 \\ b=6.25 \end{gathered}$

Since we are asked for the value of the rate of change, the answer is the value of m:

$\text{rate of change=34.95}$

which is option A.

Answer:

A. 34.95

5 0

2 years ago

The container that holds the water for the football team is 23 full. After pouring out 2 gallons of water, it is 12 full. How ma

Mama L [17]

Let full be f and gallons be g
23f-2g=12f
2g=23f-12f
2g=11f
g=5.5f
note 23f is when it is full and x is the number of gallons the container can hold.
g=5.5f
xg=23f
x=46÷11
∴x approximately is 4.9

6 0

4 years ago

a middle school had 600 students and 34% of them are in the 8th grade one fourth walk to school how many walk to school

Delvig [45]

Answer:

Step-by-step explanation:

basic facts:

34% is the same as 34/100

the word 'of' in maths also means multiply

34% of 600 is the same as 34/100 * 600, which is 204

a quarter of 204 is the same as 1/4*204, which is 51

hopefully this helps!!

4 0

3 years ago