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IrinaVladis [17]

3 years ago

8

(a) x2 + 2x - 12 when x = 5

1 answer:

tiny-mole [99]3 years ago

8 0

Answer:

8

Step-by-step explanation:

(5*2)+(2*5)-12=

10+10-12=

20-12=

8

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Last year at a certain high school, there were 75 boys on the honor roll and 50 girls on the honor roll. This year, the number o

Fantom [35]

In linear equation, 15.2% did the total number of students on the honor roll decrease.

What in mathematics is a linear equation?

A linear equation is a first-order (linear) term plus a constant in the algebraic form y=mx+b, where m is the slope and b is the y-intercept.
Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables.

50 × 24% = 12

50 × 14%= 7

12+ 7 = 19

50+75 = 125

19 ÷125= 15.2%

Learn more about linear equation

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8 0

1 year ago

If k(x) = 2x² -3.Vx, then k(9) is

Alexus [3.1K]

Answer:

159

Step-by-step explanation:

k (9) = (2 * $9^{2}$ ) - 3

= (2 * 81) - 3

= 162 - 3

= 159

8 0

2 years ago

15) In your own words, write three or four sentences explaining what exponents are and how they are used in math

Scorpion4ik [409]

Answer:

Exponents

Step-by-step explanation:

exponents are basic short cut to write numbers like 100, 1000, 10000, 1000000 and so on.

Exponents can also be defined as 10 raised to a power x whether positive or negative

$10 {}^{x}$

They are mostly used in expressing units in standard form.

<h3>examples of basic positive exponents</h3>

${10}^{2} = 100$

$10 {}^{3} = 1000$

${10}^{4} = 10000$

${10}^{5} = 100000$

basically the power represent the the number of zeroes after the 1.

<h3>examples of basic negative exponents</h3>

${10}^{ - 2} = 0.01$

${10}^{ - 3} = 0.001$

${10}^{ - 4} = 0.0001$

$10 ^{ - 5} = 0.00001$

in negative exponents the power represents the number of zeroes before the 1. including the 0 behind the decimal point.

this is the basic lay down of how exponent work but one more quick example for maximum understanding

<h3>quick example</h3>

$4 \times {10}^{4} = 0.0004$

$4 \times {10}^{4} = 40000$

$8.69 \times 10 {}^{ - 3} = 0.00869$

$8.69 \times 10 {}^{ 3} = 8690$

hope you grasp the concept involved in multiplication with other terms.

cheers

6 0

3 years ago

Nadya [2.5K]

Answer:

8+8+9+9.. so the answer is 34 yards.

Step-by-step explanation:

6 0

3 years ago

PLEASE PLEASE HELP ME!!

Ivenika [448]

Answer:

A-

X=11

(the solution is down)

B-

x+x+1+x+2=36

3x+3=36

3x=36-3

3x=33

x=33/3

x=11

------------

X=11

X+1=12

X+2=13

11+12+13=36

8 0

3 years ago