Ask question

Ask question

All categories

3 years ago

8

Katie has taken 5 math tests this year. On the first and second tests, she scored a 75. The third test she scored 10 points more

than the first two. The fourth test she scored 95 and the last test she scored 90.
What is Katie's average (mean) math score?

2 answers:

patriot [66]3 years ago

8 0

Her average score was 84, add them all up and divide by 5

Zigmanuir [339]3 years ago

6 0

75+75+85+95+90 = 420
420/5 = 84

You might be interested in

Please omg I need help ASAP please! (Giving brainliest)

snow_lady [41]

Gradient =2 because the slope is 2 units. Y-intercept = -2 because it crosses the y-line at -2.

5 0

2 years ago

Proportions and equations solve

kirza4 [7]

Y=9x because if you divided y by x all the numbers will equal to 9 which is proportional

7 0

3 years ago

Find the zeros of f(x) = 7x² + 42.

goblinko [34]

Answer:

0,42

that should be the answer

7 0

2 years ago

What is 3×4y i need it ASAP

I am Lyosha [343]

Hello!

Explanation:

First, you had to do is multiply by the numbers. And don't forget to used variables.

$4*3=12$

$3*4=12$

$12/4=3$

$12/3=4$

Answer: → $=12y$

Hope this helps!

Thanks!

-Charlie

4 0

3 years ago

Read 2 more answers

Can someone tell me how to do it, i have more problems like this

BigorU [14]

Answer:

$\large\boxed{\dfrac{7n}{30}=\dfrac{7}{30}n}$

Step-by-step explanation:

$\dfrac{2n}{5}+\left(-\dfrac{n}{6}\right)=\dfrac{2n}{5}-\dfrac{n}{6}$

To subtract both fractions we need a common denominator.

$LCD=(5)(6)=30$

$\dfrac{2n}{5}=\dfrac{2n\cdot6}{5\cdot6}=\dfrac{12n}{30}\\\\\dfrac{n}{6}=\dfrac{n\cdot5}{6\cdot5}=\dfrac{5n}{30}$

Therfore

$\dfrac{2n}{5}-\dfrac{n}{6}=\dfrac{12n}{30}-\dfrac{5n}{30}=\dfrac{12n-5n}{30}=\dfrac{7n}{30}=\dfrac{7}{30}n$

4 0

3 years ago