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Alex
3 years ago
14

(40 points to best answer) (help ASAP)

Mathematics
1 answer:
aleksandrvk [35]3 years ago
5 0

Answer:

x=3.5

Step-by-step explanation:

We can use proportions to solve this problem.  Put the side of one triangle over the same side of the other triangle.

6           4.2

------ = ----------

5           x

Using cross products

6x = 5*4.2

6x =21

Divide by 6

6x/6 = 21/6

x=3.5

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Help please! Which number has both 3 and 5 as factors? O 1215 O 1332 O 1135 O 1403​
padilas [110]

Answer:

1215

Step-by-step explanation:

It is divisible by 5 because the number in the ones place is 5.

I used a calculator to check if it is divisible by 3

7 0
3 years ago
Read 2 more answers
What is (-3) + (-8)​
Korolek [52]

Answer:

\huge \boxed{-11}

Step-by-step explanation:

(-3)+(-8)

\sf Factor \ negative \ sign.

-(3+8)

\sf Add.

-(11)

4 0
4 years ago
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Need help with this thank you 10 points
pochemuha
250 you have to divide, btw im hella wrong

8 0
4 years ago
use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number.
Jobisdone [24]

Answer:

Second Option

671 m²; 725 m²

Step-by-step explanation:

The lateral area of a triangular prism is:

A_L = Ph

Where P is the perimeter of the triangular base and h is the height of the prism.

In this case, the perimeter of the triangular base is:

P = 9 + 6+ 10.82\\\\P = 25.82\ m

Then the height is 26 m

Then the lateral area of the prism is:

A_L = 25.82 * (26)\\\\A_L = 671\ m ^ 2

Therefore the surface area of the triangular prism is:

A = 2A_B + A_L

Where A_B is the area of the base.

A_B = \frac{bh}{2}

Where b is the base of the triangle and h is the height

In this case:

b = 9\ m\\\\h = 6\ m\\\\A_B = \frac{9 * 6}{2}\\\\A_B = 27\ m ^ 2

Finally

A = 2 * 27 + 671\\\\A = 54 + 671\\\\A = 725\ m ^ 2

The answer is 671 m²  and  725 m²

3 0
3 years ago
Of all the books at a certain library, if you select one at random, then there is a 90% chance that it has illustrations. Of all
lys-0071 [83]

Answer:

There will be a minimum of 8,100 books with coloured illustrations.

Step-by-step explanation:

Change the percentages to fractions

90% = 9/10

Books with Illustrations: 9/10 of 10,000

Books in Colour: 9/10 of 10,000

Because both events are not mutually exclusive, they can happen at the same time. So multiply their fractions (probabilities).

9/10 * 9/10 =

9 * 9 = 81

10 * 10 = 100

The probability of having a book with coloured illustrations is 81/100.

Find this as a fraction of 10000.

10000 ÷ 100 × 81 = 8,100

3 0
4 years ago
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