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3 years ago

HELP RQQQQQQQQQQ plzzzzzz

Mathematics

1 answer:

geniusboy [140]3 years ago

8 0

Answer:

5 x - 2x + 7 - x = 2x + 7

Step-by-step explanation:

simplify

(5x - 2x - x) = 2x

2x + 7 = 2x + 7

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Sue chooses a dress to wear when she goes out with her parents, but she can wear it only if her parents approve. The probability

Sophie [7]

12%

40% = 0.4
30 = 0.3

0.3 x 0.4 = 0.12

0.12 = 12%

4 0

3 years ago

Please help me with this problem.

Harrizon [31]

Answer:

Step-by-step explanation:

$45^{2} +b^{2} =75^{2} \\2025+b^{2}=5625\\b^{2} =3600\\b=60$

7 0

3 years ago

Read 2 more answers

A savings account earns 15% interest annually. What is the balance after 8 years in the savings account when the initial deposit

natita [175]

The balance after 8 years is $22,942.67

<h3>What is the balance after 8 years?</h3>

We know that the savings account earns 15% annually, and the initial deposit is $7500, then the balance as a function of time in years is:

B = $7500*(1 + 15%/100%)^t

B = $7500*(1.15)^t

The balance after 8 years is what we get when we evaluate the above function in t = 8, so we get:

B = $7500*(1.15)^8 = $22,942.67

So the correct option is the last one.

If you want to learn more about exponentials:

brainly.com/question/2456547

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3 0

2 years ago

Solve the problem. Find the surface area of a right regular hexagonal pyramid with sides 2 cm and slant height 5 cm. Round youra

BabaBlast [244]

Answer:

The surface area of the right regular hexagonal pyramid is 50.78 cm².

Step-by-step explanation:

Given:

A right regular hexagonal pyramid with sides(s) 2 cm and slant height(h) 5 cm.

Now, to find the surface area(SA) of the right regular hexagonal pyramid.

So, we find the area of the base(b) first:

Area of the base = $\sqrt[3]{3}\times s^{2}$

= $\sqrt[3]{3}\times 2^{2}$

On solving we get:

Area of the base(b) = $20.784$

Then, we find the perimeter(p) :

Perimeter = s × 6

$p=2\times 6=12$

Now, putting the formula for getting the surface area:

Surface area = perimeter × height/2 + Area of the base.

$SA=\frac{p\times h}{2}+b$

$SA=\frac{12\times 5}{2}+20.784$

$SA=30+20.784$

$SA=50.784$

As, <em>the surface area is 50.784 and rounding to nearest hundredth becomes 50.78 because in hundredth place it is 8 and in thousandth place it is 4 so rounding to it become 50.78.</em>

Therefore, the surface area of the right regular hexagonal pyramid is 50.78 cm².

5 0

3 years ago

Find the median for the price of movie tickets at various theaters. $3, $4, $4, $4, $5, $5, $5, $5, $5, $6, $7, $7, $8, $9,

enot [183]

<span>$3,$4,$4,$4,$5,$5,$5,$5,$5,$6,$7,$7,$8,$9
Out of all of these the answer is</span>
since,
(5+5)/2=5
so the median is $5

6 0

3 years ago