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4 years ago

() + -8= -6 what is the awnser

Mathematics

1 answer:

Mariana [72]4 years ago

5 0

Answer:x=2

Step-by-step explanation:

change () to x

x + -8= -6

-6+8=2

x=2

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The Garzas choose carpeting that cost $18.70 per square yard. They need 11.5 square yards for one room and 15.2 square yards for

kvv77 [185]

Hi there! The Garzas will spend $499.29 on the carpeting.

The total area that will be carpeted is 11.5 + 15.2 = 26.7 square yard.

To find the total cost of the carpeting, we need to multiply the total area by the cost per area. Hence, 26.7 * 18.70 = $499.29

6 0

3 years ago

A student researcher compares the ages of cars owned by students and cars owned by faculty at a local state college. A sample of

amm1812

Answer:

Margin of error = 0.81

Upper limit = -0.56

Lower limit = -2.18

Step-by-step explanation:

Given Data;

Sample size Sample mean population deviation S.D

Sample 1 n₁= 64 x1-bar = 6.27 б₁ = 2.64

Sample 2; n₂ = 40 x2 -bar = 7.64 б₂ = 3.42

For 80% interval, a = 1-0.8 = 0.2

From normal standard table,

the critical value of (a/2 = 0.2/2) =0.1 is 1.28

That is, Z = 1.28

Calculating the margin of error, we have

Margin of error = Z * √(б²₁/n₁ + б²₂/n₂)

= 1.28 * √(2.64²/64 + 3.42²/40)

= 1.28 * √0.1089 + 0.29241

= 1.28 * √0.40131

=0.81

Lower and upper limit of 80% interval for the difference between the true mean ages for cars owned by student and faculty is calculated as

Lower limit = (x1 - x2) - margin of error

= (6.27-7.64) - 0.81

= -2.18

Upper limit = (x1 - x2) + margin of error

= (6.27-7.64) + 0.81

= -0.56

5 0

3 years ago

Please help! The volume of an inflated spherical water balloon is 121,500 pi millimeters to the third. What is the radius of the

irga5000 [103]

Answer:

The radius of the inflated spherical balloon is 45 millimeters.

Step-by-step explanation:

Volume of the spherical water balloon = 121,500 pi cubic millimeters

Let the radius of the balloon = r

Now, Volume of a Sphere = $\frac{4}{3} \pi r^{3}$

⇒ $\frac{4}{3} \pi r^{3} = 121,500 \pi$

On solving for the value of r, we get:

$r^{3} = \frac{121,500\times 3}{4} = 91125\\ \implies r = \sqrt[3]{91125}$

or, r = 45 millimeter

Hence, the radius of the inflated spherical balloon is 45 millimeters.

5 0

4 years ago

If x=6z then 18z=3y, then x= ?

Kazeer [188]

The Answer Is 6z

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7 0

3 years ago

PLS HELP WILL MARK BRAINLIEST

Ipatiy [6.2K]

Answer:

$n+d\leq 20$

6 0

3 years ago