3 years ago

What is the value of -3r+ 8 when r=4? 0 -12 0 -4 O4 o 12

Mathematics

2 answers:

Drupady [299]3 years ago

4 0

The correct answer is -4.

ANTONII [103]3 years ago

3 0

Answer:

Step-by-step explanation:

-3r + 8

r = 4

Substitute r with the number it stood in for.

-3(4) + 8

Do the multiplication first.

-12 + 8

8 - 12

Compute.

-12 + 8 = 4

Your answer is 4

You might be interested in

A single standard six sides die is rolled. what is the probability the roll is a multiple of three given that it is an even numb

tankabanditka [31]

33.3%

Since we are given that it is an even number, we know there is only 3 options (2, 4, 6). Since only one of them is an even number, we know that we need the fraction 1/3 or 33.3% for a probability.

5 0

3 years ago

Please help me with this question

Akimi4 [234]

The last one. The starting temperature was 82°

4 0

3 years ago

Segment EF is a mid segment of triangle ABC. IF BC = 12 cm, what is the measure of segment EF?

Effectus [21]

The answer is 6 cm. The mid segment is half of BC

8 0

3 years ago

Read 2 more answers

8. You are planning to use a ceramic tile design in your new bathroom. The tiles are blue-and-white equilateral triangles. You d

ira [324]

Step 1

Find the area of one equilateral triangle

Applying the law of sines

$Area=\frac{1}{2} *a*b*sin C$

in this problem

a=b=7 cm

C=60 degrees

$Area=\frac{1}{2} *7*7*sin 60$

$Area=\frac{1}{2} *49*\frac{\sqrt{3}}{2} \\ Area=49*\frac{\sqrt{3}}{4}$ cm²

Step 2

To calculate the area of the hexagon multiply the area of one equilateral triangle by $6$

$Area Hexagon=6*[49*\frac{\sqrt{3}}{4}] \\ Area Hexagon=73.5*\sqrt{3}$ cm²

therefore

the answer is the option

73.5 sqrt 3cm²

3 0

3 years ago

Read 2 more answers

Cassie is measuring the dimensions of her bedroom wall so that she will know how much paint to buy. which of the choices shown i

Gennadij [26K]

She needs to measure the area of the wall

5 0

3 years ago