What is the value of the expression below when x
6 and y = 10?
10x - 5y

Answers

Answer 1

Answer:

Answer: 10

Step-by-step explanation: Because 10times X when X=6 is 60 then 5 times Y when Y=10 makes it 50 then subtract the two numbers

60-50=10

Answer 2

Answer:

Final answer:

The value of the expression 10x - 5y when x = 6 and y = 10 is 10.

Explanation:

The expression given is 10x - 5y. We are asked to determine the value of this expression when x = 6 and y = 10. To do this, we replace x and y in the expression with these given values:

10*6 - 5*10 = 60 - 50 = 10

So, when x = 6 and y = 10, the value of the expression 10x - 5y is 10.

Learn more about Algebraic Expressions here:

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Which should be calculated first to solve this story problem?Joey drove his new car 58.3 miles per hour for 3 hours on Saturday, and then 52.8 miles per hour for 4 hours on Sunday.

How far did Joey drive altogether?

A.
the number of miles driven in 3 hours

B.
the total number of hours driven

C.
the total number of miles driven

Answers

Step-by-step explanation:

the answer is A, need to calculate individual distance first

grant plans to evaporate enough water from 22 gallons of a 16% ammonia solution to make a 24% ammonia solution. Which equation can he use to find n, the number of gallons of water he should remove?

Answers

The equation to get the number of gallons of water he should evaporate
= 22 - (22 x 0.16)/0.24

A country’s population doubled in 45 years. what was the exponential growth rate

Answers

Final answer:

The exponential growth rate is approximately 1.56% per year for a population to double in 45 years.

Explanation:

To calculate the annual growth rate for a population that doubles in a specific time period, we can use the rule of 70, which is a formula for estimating the time it takes for an investment or population to double given a constant growth rate. The rate of growth (r) can be calculated as r=70/t, where t is the time in years.

In this case, the country's population doubled in 45 years. So, the annual growth rate would be r=70/45

= 1.56%.

Therefore, the exponential growth rate that caused the country's population to double in 45 years is approximately 1.56% per year.

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Its says use rounding or compatible numbers to estimate the sum and example 198 + 727 ans is 200+725=925 I still don't understand how to do it. Heres a problem 87+34 and here is one 222+203

Answers

Answer:

a) 121

b) 425

Step-by-step explanation:

We are given the following information in the question:

198 + 727 + 200 + 725 = 925

This can be explained with the help of associative of addition and subtraction and commutative property of the addition.

Associative property:

$a+(b+c) = (a +b )+c$

Commutative property:

$a+b = b+a$

$198 + 727 \n= 198 + ( 727 + 2)\n=198 + ( 2 + 727)\n=(198 + 2) + 725\n= 200+ 725 \n= 925$

$87 + 34\n= 87 + ( 31 + 3)\n=87 + ( 3 + 31)\n=(87 + 3) + 31\n=90 + 31\n=121$

$222 + 203\n=(220 + 2) + 203\n=220 + ( 2 + 203)\n=220 + 205\n=425$

Okay, rounding is when you take a number such as 198 and imagine that it is something easier to do math with, like 200.
200 is easier to add with because there are zeroes in the tens place and the ones place.
725 is easier to add with than 727 because the ones place digit, (5), is an easier base to use, just like zero.
Using the easier numbers, 200 + 725 = 925
Using the original numbers, 198 + 727 + 925
*Because you took two pieces from the 727 and added them to 198, the four numbers in this problem are compatible.
Compatible numbers are when you use numbers that are close to the original ones and make it easier to do the problem in your head.
____
In the case of 87+ 34, the simplest numbers to use would be 90 instead of 87 and 35 instead of 34. Not as easy as the first equation, but still doable.
90+35+125
or
87+34=121
____
In the case of 222+203, the simplest substitutions are 220 and 200.
220+200=420
or
222+203=425
Hope this helps,
Ahawk

From the set {21, 37, 45}, use substitution to determine which value of x makes the inequality true.x - 8 > 29
45
none of these
37
21

Answers

37 as if it was 21 there will be no question to getting it wrong its just the facts in the sentence that tells you its right

Hi there,

It would be 45 because that is the only thing that
can make the inequality true

Hope this helped you

A rock that weighed 1.2 pounds on the moon weighed 7.06 pounds on Earth.About how much would an astronaut who weighs 174 pounds on Earth weigh
on the moon?