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3 years ago

On a number line, what other number is the same distance from -2.8 as -7.2 is?

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

3 0

Answer;

1.6

Explanation

What we shall do here is to calculate the distance between the two points on the number line

Mathematically, that would be ;

-2.8 -(-7.2) = -2.8 + 7.2 = 4.4

This means that -7.2 is 4.4 units away from -2.8

So to find other number which is this same distance;

we have -2.8 + 4.4 = 1.6

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Solve for the variable: -8f > 56

kolbaska11 [484]

Hi there....

-8f > 56
Divide both sides by -8
-8f/-8 > 56/-8
f < -7

The correct option is : B

6 0

2 years ago

John and Ariana bought school supplies, John spent $10.65 on 4 notebooks and 5 pens. Ariana spent $7.50 on 3 notebooks and 3 pen

timurjin [86]

Cost of 1 notebook is $ 1.85 and cost of 1 pen is $ 0.65

<h3><u>Solution:</u></h3>

Let "a" be the cost of 1 notebook

Let "b" be the cost of 1 pen

Given that John spent $10.65 on 4 notebooks and 5 pens

cost of 1 notebook x 4 + cost of 1 pen x 5 = 10.65

4a + 5b = 10.65 ------ eqn 1

Given that Ariana spent $7.50 on 3 notebooks and 3 pens

3a + 3b = 7.50 ----- eqn 2

Let us solve eqn 1 and eqn 2 to get the values of "a" and "b"

Multiply eqn 1 with 3

12a + 15b = 31.95 ---- eqn 3

Multiply eqn 2 with 4

12a + 12b = 30 ------ eqn 4

Subtract eqn 4 from eqn 3

12a + 15b = 31.95

12a + 12b = 30

(-) ---------------------

3b = 1.95

b = 0.65

Substitute b = 0.65 in eqn 1

4a + 5(0.65) = 10.65

4a = 7.4

a = 1.85

Thus cost of 1 notebook is $ 1.85 and cost of 1 pen is $ 0.65

8 0

2 years ago

Answer these please thank you

xxMikexx [17]

Answer:

reactivity

Step-by-step explanation:

7 0

3 years ago

The product of 7/16 4/3 and 1/2 is

Tju [1.3M]

7/16*4/3*1/2=28/96=7/24 by simply multiplying and then simplifying the fraction.

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3 years ago

Complete factor the given polynomials. If a polynomial cannot be factored, write "not factorable."

exis [7]

$6 x^{2} +24x+21$

Multiply 6 and 21 and you get 126. You will need to find two factors of 126 which will add up to 24 (the middle number of the equation). After guess and check, the two numbers are 14 and 9. Instead of 24x, replace it with 14x and 9x.

$6 x^{2} +14x+9x+21$

Factorise each pair separately,

$2x(3x+7) + 3(3x+7)$
$(3x+7)(2x+3)$

Hope this helped!

8 0

3 years ago

On a number line, what other number is the same distance from -2.8 as -7.2 is?​

On a number line, what other number is the same distance from -2.8 as -7.2 is?