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grin007 [14]
2 years ago
5

Find the value of 3a + b when a = 5 and b = -2

Mathematics
2 answers:
Licemer1 [7]2 years ago
5 0

Answer:

13

Step-by-step explanation:

Just replace the a and b with the value given then plug it into a calculator.

Should look like 3(5)+(-2)

madam [21]2 years ago
3 0

Answer:

13

Step-by-step explanation:

3(5)+(-2)

15-2

13

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Two planes intersect at a Line.
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Reese is selling lemonade at the parade. He gets to keep 50% of the money he collects. A large lemonade is $6.00 and a small lem
yuradex [85]

Answer:

$5

Step-by-step explanation:

Given data

We are given that

Large lemonade= $6

Small lemonade= $4

Total amount = 6+4= $10

He keeps 50% of the total

= 50/100*10

=0.5*10

= $5

Hence he will keep $5

8 0
2 years ago
Pls somone help me I need the answer pls
Debora [2.8K]

Answer:

$218.40

Step-by-step explanation:

Subtract 16% from the amount or divide by 100 and multiply by 84

8 0
2 years ago
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What is the area of the base of the cone below? Round the answer to the nearest tenth if necessary. A cone with height 8 inches
docker41 [41]

Answer:

The area of the circle is 19.5 in²

Step-by-step explanation:

First of all to solve this problem we have to know the formula to calculate the volume of a cone

v = volume  = 52 in³

r = radius

h = height  = 8 in

π = 3.14

v = 1/3 * π * r² * h

we solve r

3 * v /h * π = r²

we replace the known values

3 * 52 in³ / 3.14 * 8 in = r²

156 in³ / 25.12 in = r²

6.21 in² = r²

√6.21 in² = r

2.49 in = r

now that we have the radius we need to use the area formula of a circle:

a = area

r = radius = 2.49 in

π = 3.14

a = π * r²

we replace the known values

a = 3.14 * (2.49 in)²

a = 3.14 * 6.21 in²

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7 0
3 years ago
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What is the solution to 6x^2 + 2x + 4 = 0?
Angelina_Jolie [31]

Step 1) Divide 6 and 4 (the last 2 numbers) and bring everything else down

<em>6x^24x+2x+4</em>

Step 2) Place in parentheses

<em>(6x^24x)+(2x+4)</em>

Step 3) Figure out what you can take out of each parentheses.

**In the first one, you can take out 6x because both numbers have x and 6 is the largest number 6 and 24 can go into.**

**In the second one, you can only take out 2 because 2 is the largest number that goes into 2 and 4.**

Step 4) You will know you did it correctly when the parentheses match up

<em>6x(x+4) + 2(x+4)</em> <<< this is how it should look

Answer: <em>(6x+2)(x+4)</em>

8 0
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