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3 years ago

9th grade math !!!!!

Mathematics

1 answer:

melamori03 [73]3 years ago

7 0

Answer : 167

Step-by-step explanation: had this one

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Plz help asap!!! Will give brainlest!!!

8090 [49]

Answer:

Step-by-step explanation:

Total expenditure is $55

Breakdown

2 books cost $10

4 books cost $25

Subtotal for 6 books is 10+25=$35

Remaining amount from total is 55-35=$20

If each book costs approximately $5 then for $20, each book is 20/5=$4

5 0

3 years ago

A train covers 168 miles at a speed of 42 mph. How much time dod it take?

Sergio039 [100]

Answer:

4 hours

Step-by-step explanation:

42x?=168

?=4

3 0

3 years ago

Hai came someone help I too lazy to do it...

baherus [9]

Answer: 4 Cups

I think in order to solve this, you would need to add up the fractions that they used. So it would be,

$\frac{1}{4}+\frac{1}{4}+\frac{3}{8}+\frac{3}{8}+\frac{5}{8}+\frac{5}{8}+\frac{5}{8}+\frac{7}{8}$ Transform the Expressions

$\frac{1+1}{4} +\frac{3+3+5+5+5+7}{8}$ Calculate the sum

$\frac{2}{4} +\frac{28}{8}$ Reduce

$\frac{1}{2}+\frac{7}{2}$ Transform the Expression

$\frac{1+7}{2}$ Calculate

$\frac{8}{2}$ Reduce the Fraction

$4$

Please mark brainliest if this helped you :)

3 0

3 years ago

Find the missing side of this right a triangle? help pls

yaroslaw [1]

Hi, there!

_____

To find the missing side length of this triangle (which is a right triangle), we'll use Pythagoras' Theorem.

$-\!\!\!-\!\!\!-\!\!\!\longrightarrow\boldsymbol{a^2+b^2=c^2}$

Here,

$\textsc{legs:}\begin{cases} \bold{a}\\\bold{b} \end{cases}$

Hypotenuse (the longest side): c

We know that

$\bold{a=2 \ and \ b=28}$

So, we can substitute our parameters, and solve for c.

$\bold{2^2+28^2=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ square 2 and 28

$\bold{4+784=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ add the numbers

$\bold{788=c^2}$ $-\!\!\!-\!\!\!-\!\!\!\longrightarrow$ square root both sides

$\bold{\sqrt{788}=c}$

Hope the answer - and explanation - made sense,

happy studying!!

6 0

2 years ago

3 x (1 3/8 + 1/2 3/8 and 1/2 is a fraction Please hurry 5th math is a nightmare!!

katrin [286]

Answer:

6.88

Step-by-step explanation:

6 0

3 years ago