MATHEMATICS HIGH SCHOOL

5x70= 5 x_tens
= tens =____?
Use place value to find the product.

Answers

Answer 1

Answer:

Solution:

5 x 70 = 5 x 7 tens

At the blank space 7.

Because 1 ten = 1 x 10

Therefore, 70 = 7 tens

70 as 7 tens

5 x 70 = 5 x 7 tens = 35 tens

Because 5 x 7 =35

As we know 35 tens = 350

Because 1 tens = 10

Therefore, 35 tens = 350

Thus, 5x70 = 350

Answer 2

Answer: 5 × 70 = 5 × 7 tens = 350

WHY?

1 ten = 10 ones

70 ÷ 10 = 7

So 7 tens.

Hope I helped ya!

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The radius of Venus is 3760.4 miles. What is the approximate volume of Venus?

Answers

Venus is a planet, hence is spherical shaped.

Formula for Volume of a Sphere: 4/3πr^2

Apply this formula
4/3π(3760.4)^2=59232040.95 miles^3

Alexa read 5 books in 3 months. What was her rate of reading in books per month

Answers

Final answer:

To find Alexa's reading rate (number of books read per month), we divide the number of books read (5) by the number of months (3). The result, roughly 1.67 books per month, indicates Alexa reads about 2 books per month, if we're rounding to the nearest whole number.

Explanation:

This problem is determined using rate calculation. The rate is what we get when we divide the total quantity by the total time. Here, the total count of books is 5 and the total time is 3 months.

To find Alexa's reading rate in books/month, therefore, we divide the number of books read by the number of months which gives:

5 books / 3 months = 1.67 books/month

If we're rounding to the nearest whole number, Alexa's rate of reading would be approximately 2 books per month.

Learn more about rate calculation here:

brainly.com/question/30984881

#SPJ2

I think you are looking for a percentage but it works be about 266% or 2.66 books per month

Solve the equation. If necessary, round your answer to the nearest tenth.4x2 = 121

A.
2.75, –2.75

B.
5.5, –5.5

C.
11, –11

D.
30.25, –30.25

Answers

B: x = 5.5 or -5.5 (square root) -> 2x = 11 (divide by 2) -> x = 5.5 or -5.5

Answer:

5.5 or -5.5

Step-by-step explanation:

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What is the solution to the equation 7(a – 10) = 13 – 2(2a 3)?

Answers

7(a - 10) = 13 - 2(2a + 3)
7a - 70 = 13 - 4a - 6 = 7 - 4a
7a + 4a = 7 + 70
11a = 77
a = 77/11 = 7
a = 7.

Answer:

$a=7$

Step-by-step explanation:

we have

$7(a-10)=13-2(2a+3)$

Solve for a

$7a-70=13-4a-6$

Group terms that contain the same variable and move the constants to the other side

$7a+4a=13-6+70$

Combine like terms

$11a=77$

Divide by $11$ both sides

$a=7$

Solve for n. 3(n-19)/5=0

Answers

When you have a fraction like this, just know that the denominator does not matter. The numerator does because 0/any number = 0.
There are many ways to solve this:
Distribute
$(3n-57)/(5) =0$
$(3n-57)/(5) *5=0*5$ << the 5/5=1
$3n-57=0$ << add 57 to both sides
$3n=57$
$(3n)/(3) = (57)/(3)$ << divide 3 on both sides
57/3=19
OR
Pretend that n-19 = a
$(3a)/(5) =0$
Multiply 5 on both sides, so you get 3a=0. Then, you divide 3 on both sides.
a=0.
DO NOT FORGET, n-19 = a.
So, n-19=0.
Isolate n by adding 19 to both sides, and
n=19.

3( n - 19 ) = 0 ;
n - 19 = 0 ;
n = 19 .

A toy rocket is shot vertically into the air from a launching pad 5 feel above the ground with an initial velocity of 80 feet per second. The height h, in feet, of the rocket above the ground as t seconds after launch is given by the function h(t)=-16t^2+80t+5. How long will it take the rocket to reach its maximum height? What is the maximum height?CAN ANYONE HELP ME ASAP!!!!
Thank you in advance

Answers

$h(t)=-16t^2+80t+5\n\nt_(max)-time\ for\ a\ maximum\ height\n\nt_(max)=- (80)/(2\cdot(-16)) = (80)/(32) =2.5\ [s]\n\nh_(max)-the\ maximum\ height\ above\ the\ ground\n\nh_(max)=h(2.5)=-16\cdot2.5^2+80\cdot2.5+5=-16\cdot6.25+200+5=\n.\ \ \ \ \ \ =-100+205=105\n\nh_(max\ rocket)-the\ maximum\ height\ of\ a\ toy\ rocket\n\nh_(max\ rocket)=105-5=100\ [ft]\n\nAns.\ t_(max)=2.5\ second,\ \ h_(max\ rocket)=100\ feet.$