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3 years ago

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
––
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

5 0

3 years ago

Can you please help?

Alborosie

Can’t help DDDD: bcoz link is a scam

7 0

3 years ago

3x + 9 = x + 5 Two sided equations

Fiesta28 [93]

Answer:

x=-2

Step-by-step explanation:

Let's solve your equation step-by-step. 

3x+9=x+5

Step 1: Subtract x from both sides. 

3x+9−x=x+5−x

2x+9=5

Step 2: Subtract 9 from both sides. 

2x+9−9=5−9

2x=−4

Step 3: Divide both sides by 2. 

2x /2=-4/2

x=−2

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

$A+B+C=180\°$

substitute the given values

$73.8\°+B+98\°=180\°$

$171.8\°+B=180\°$

$B=180\°-171.8\°=8.2\°$

5 0

3 years ago