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3 years ago

Help please...................

Mathematics

1 answer:

aleksklad [387]3 years ago

5 0

Answer:

Step-by-step explanation:

11.

Area as sum: $7d+7*4$

Area as Product: 7(d+4)

12. Area as sum: y*y+y*3

Area as Product: y(y+3)

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2x - m x= 4 m= 2 can you help me because I wanna know what the answer

NeTakaya

Answer:

Step-by-step explanation:

2x-m

When you substitue in the values for x and m:

2(4)-2

Now you can solve the equation:

2(4)-2

8-2

So this leads to the answer

2x-m=6 or 2(4)-2=6

6 0

3 years ago

What is the answer 9c-5=13?

riadik2000 [5.3K]

C is 2 because you have to move the 5 so you add 5 to 13 which is 18 then divide both sides by 9 so it's 2

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3 years ago

What is the slope of 7x-3y=-12 ?

mixas84 [53]

The answer i believe is 4000

5 0

3 years ago

Read 2 more answers

Use a trigonometric ratio to find the value of x. Round your answer to the nearest tenth

rewona [7]

Answer:

B) 5.8

Step-by-step explanation:

5 0

3 years ago

1. Bob tried to answer the following question by finding the missing angle and rounding the answer to the nearest degree.

iren2701 [21]

Answer:

Part 1)

Bob's mistake was to have used the cosine instead of the sine

The measure of the missing angle is $53.13\°$

Part 2) The surface area of the pyramid is $288\ cm^{2}$

Step-by-step explanation:

Part 1)

Let

x----> the missing angle

we know that

In the right triangle o the figure

The sine of angle x is equal to divide the opposite side angle x to the hypotenuse of the right triangle

$sin(x)=\frac{16}{20}$

$x=arcsin(\frac{16}{20})=53.13\°$

Bob's mistake was to have used the cosine instead of the sine

Part 2) we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces

$SA=b^{2}+4[\frac{1}{2}(b)(h)]$

where

b is the length side of the square

h is the height of the triangular lateral face

In this problem

$h=b/2$ -------> by an 45° angle

$b=2h$

$sin(45\°)=\frac{h}{6\sqrt{2}}$

$h=6\sqrt{2}(sin(45\°))=6\ cm$

Find the value of b

$b=2(6)=12\ cm$

Find the surface area

$SA=12^{2}+4[\frac{1}{2}(12)(6)]=288\ cm^{2}$

3 0

4 years ago

Help please...................​

Help please...................