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gayaneshka [121]
3 years ago
6

HELPPPPPPPPP PLZZZZ ASAP I WILL MARK Y AS A BRAINLIEST

Mathematics
1 answer:
juin [17]3 years ago
3 0

Answer:

f(- 7) = 17

Step-by-step explanation:

To evaluate f(- 7) substitute x = - 7 into f(x) , that is

f(- 7) = - 2(- 7) + 3 = 14 + 3 = 17

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A wall of a building is 30 inches wide.sixteen inches is concrete,8 inches is brick,and 6 inches is limestone . What fraction of
labwork [276]
16
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30

because there are 30 inches in all and 16 out of the 30 are concrete
5 0
4 years ago
16 decreased by a number is - 5
storchak [24]
The answer would be 11

11-16=-5
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3 years ago
Can you please help?
Alborosie
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3 years ago
3x + 9 = x + 5 Two sided equations
Fiesta28 [93]

Answer:

<em><u>x=-2</u></em>

Step-by-step explanation:

<u>Let's solve your equation step-by-step. </u>

<em>3x+9=x+5 </em>

<u>Step 1: Subtract x from both sides. </u>

<em>3x+9−x=x+5−x </em>

<em>2x+9=5 </em>

<u>Step 2: Subtract 9 from both sides. </u>

<em>2x+9−9=5−9 </em>

<em>2x=−4 </em>

<u>Step 3: Divide both sides by 2. </u>

<em>2x /2=-4/2</em>

<em>x=−2 </em>

8 0
3 years ago
Consider a Triangle ABC like the one below. Suppose that C = 98, A = 74, and b = 11 (figure is not drawn to scale.) solve the tr
Degger [83]

Answer:

A=73.8\°

B=8.2\°

c=76.3\ units

Step-by-step explanation:

step 1

Find the measure of side c

Applying the law of cosines

c^{2}= a^{2}+b^{2}-2(a)(b)cos(C)

substitute the given values

c^{2}= 74^{2}+11^{2}-2(74)(11)cos(98\°)

c^{2}=5,823.5738

c=76.3\ units

step 2

Find the measure of angle A

Applying the law of sine

\frac{a}{sin(A)}=\frac{c}{sin(C)}

substitute the given values

\frac{74}{sin(A)}=\frac{76.3}{sin(98\°)}

sin(A)=(74)sin(98\°)/76.3

A=arcsin((74)sin(98\°)/76.3)

A=73.8\°

step 3

Find the measure of angle B

we know that

The sum of the internal angles of a triangle must be equal to 180 degrees

so

A+B+C=180\°

substitute the given values

73.8\°+B+98\°=180\°

171.8\°+B=180\°

B=180\°-171.8\°=8.2\°

5 0
3 years ago
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