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3 years ago

Pls solve plsssssssss

Mathematics

1 answer:

____ [38]3 years ago

5 0

Answer:

D. It represents .90 cents, which is $5.40 divided by 6

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What is the GCF of 8 and 24?

Marysya12 [62]

The factors of 8 are 1, 2, 4, and 8.

The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.

The largest factor that is in both these lists is 8, therefore, the greatest common factor os 8 and 24 is 8.

Hope this helped! (:

3 0

3 years ago

Read 2 more answers

The surface area of a rectangular prism is the sum of:

Anastaziya [24]

Answer:

Surface area of prism= $2(l+w)h+2(lw)$

Step-by-step explanation:

We are given that surface area of rectangular prism= $2(lw+lh+wh)$

We have to write an expression that represents the surface area of prism.

Base of prism is made from length and width

Perimeter of base =2(l+w)

Area of base=lw=Area of top

Surface area of prism=Perimeter of base multiply by height+2 area of base

Because area of base and area of top are equal.

Surface area of prism=Ph+2B=2(l+w)h+2(lw)

8 0

3 years ago

How to solve this equation equal to zero

hjlf

3x² -16x-12 =0

We can solve this equation using formula.

a=3, b=-16, c=-12

$x= \frac{-b+/- \sqrt{b^{2} -4ac} }{2a} 
\\ \\ x= \frac{16+/- \sqrt{16^{2}+4*3*12} }{2*3} = \frac{16+/- \sqrt{400} }{6} = \frac{16+/-20}{6} 
\\ \\ x_{1}= \frac{16+20}{6} =6
\\ \\x_{2}= \frac{16-20}{6} =- \frac{4}{6} = -\frac{2}{3}$

8 0

3 years ago

Find the value of x.<br> helpppp

Bezzdna [24]

Answer: $55^{\circ}$

Step-by-step explanation:

The measure of the third unknown arc is

$360^{\circ}-70^{\circ}-110^{\circ}=180^{\circ}$ .

So, $x=\frac{180^{\circ}-70^{\circ}}{2}=\boxed{55^{\circ}}$

8 0

2 years ago

The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0

4 years ago