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3 years ago

Change 7 5/7 to improper fraction

Mathematics

1 answer:

den301095 [7]3 years ago

8 0

The answer to change into an improper fraction is 54/7.

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Help please im marking brainliest

Strike441 [17]

The surface area of the triangular prism is of 140 cm².

<h3>What is the surface area of a prism?</h3>

It is the sum of the areas of all faces of a prism. In this problem, the prism has these following faces:

One rectangle of dimensions 8 cm and 6 + 4 + 5 = 15 cm.

Two right triangles with sides 4 cm and 5 cm.

For a rectangle, the area is given by the multiplication of the dimensions, hence:

Ar = 8 x 15 = 120 cm²

For each right triangle, the area is given by half the multiplication of the sides, hence:

At = 2 x 0.5 x 4 x 5 = 20 cm².

Then the surface area of the prism is:

S = 120 cm² + 20 cm² = 140 cm².

More can be learned about surface area at brainly.com/question/28123954

#SPJ1

3 0

2 years ago

I need help with this math problem may someone please help me

KonstantinChe [14]

Answer:

I got $\frac{-8}{7}$

Please correct me If I'm wrong

Step-by-step explanation:

$\frac{b-c}{a}$

$\frac{-3-5}{7}$

$\frac{-3-5}{7}= \frac{-8}{7}$

3 0

3 years ago

HW HELP ASAP PLZZZZZZ

astraxan [27]

Graph 2 should be right because it moves up 1 because of the +1 that is in the parentheses.

5 0

3 years ago

Suppose that the age that children learn to walk is normally distributed with mean 12 months and standard deviation 1 month. 19

Gnesinka [82]

Answer with explanation:

Given : The age that children learn to walk is normally distributed with $\mu=12\text{ months}$ and $\sigma=1\text{ month}$ .

Let x be the age that children learn to walk .

B) Using formula $z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

n= 19

For x= 11.5

$z=\dfrac{11.5-12}{\dfrac{1}{\sqrt{19}}}=-2.18$

For x= 12.5

$z=\dfrac{12.5-12}{\dfrac{1}{\sqrt{19}}}=2.18$

Then, by using the z-value table , for the 19 people, the probability that the average age that they learned to walk is between 11.5 and 12.5 months old will be :-

$P(-2.18$

Hence, for the 19 people, the probability that the average age that they learned to walk is between 11.5 and 12.5 months old = 0.9707

C. Using formula $z=\dfrac{x-\mu}{\sigma}$

For x= 11.5

$z=\dfrac{11.5-12}{1}=-0.5$

For x= 12.5

$z=\dfrac{12.5-12}{1}=0.5$

Then, by using the z-value table , the probability that the average age that they learned to walk is between 11.5 and 12.5 months old will be :-

$P(-0.5$

Hence, the probability that the average age that they learned to walk is between 11.5 and 12.5 months old = 0.3829

3 0

3 years ago

We have a jewelry sale event where we are promoting a gold necklace at 33% off with an initial retail of $88.00. What would the

Andrej [43]

(Ignore the scatter plot thing)

Since the necklace is 33% off, you subtract 33% from 100% to get 67% (you’re only paying 67% of the initial price). You can then multiply 88*0.67 to get the sale price, which is $58.96. For the markdown dollars you can subtract 58.96 from 88 to get $29.04 (you saved $29.04 from the sale)

4 0

4 years ago