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3 years ago

Evaluate the expression 10−2x+8 when x=2.

Mathematics

1 answer:

vovikov84 [41]3 years ago

8 0

Answer:

$10 - 2x + 8 \\ x = 2 \\ so \\ 10 - 2(2) + 8 = 18 - 4 = 14$

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A) write √3×√6 in the form of b√2 where b is the insteger<br><br>b) simplify √8×√18<br>

Bas_tet [7]

Step-by-step explanation:

a.) the given term can be written as

$\sqrt{3} \times \sqrt{3 \times 2}$

$\sqrt{3 \times 3 \times 2}$

$3 \sqrt{2}$

hence the given term is

$3 \sqrt{2}$

where b = 3

b.)

$\sqrt{8} \times \sqrt{18}$

$\sqrt{2 \times 2 \times 2} \times \sqrt{2 \times 3 \times 3}$

$\sqrt{2 \times 2 \times 2 \times 2 \times 3 \times 3}$

$12$

hence the given term is 12

4 0

3 years ago

Please no links and i need this to be right please

Nataly_w [17]

Answer:

Part A: 6x + 20

Part B: Expression G and H are not equivalent for any value of x.

Step-by-step explanation:

Part A:

G = 2(3x + 10)

G = 6x + 20

Part B:

6x + 20 = 6x + 12

-20 -20

6x = 6x - 8

-6x -6x

0 = -8

No solution. This means that expressions G and H are not equivalent for any value of x.

4 0

3 years ago

An hour befor show time,only 155 people are seated for rockfest.According to ticket sales 95% of the people have yet to arrive

Ludmilka [50]

Question:

An hour before show time, only 155 people are seated for rockfest. According to the ticket sales, 95% of the people have yet to arrive. How many tickets were sold?

Answer:

3100 tickets

Step-by-step explanation:

Given

$p = 95\%$ --- Yet to arrive

$Seated = 155$

Required

Determine the total number of people

If 95% are yet to arrive, then 5% have arrived (i.e. 100% - 95%)

So, the total number of people is calculated as:

$5\% * x = 155$

Where x represents the total number of tickets

Make x the subject

$x = \frac{155}{5\%}$

$x = \frac{155}{0.05}$

$x = 3100$

3 0

3 years ago

The center of a circle is at (−3, 1) and its radius is 9. What is the equation of the circle?

jek_recluse [69]

If a circle has center (a,b) and radius r, the equation is

$(x-a)^2+(y-b)^2=r^2$

So, you have

$(x+3)^2+(y-1)^2=81$

7 0

3 years ago

Frank makes four bows to decorate a gift basket. Each bow uses7/8 yards of ribbon. The ribbon comes in spool of 3 yards, 5 yards

Alinara [238K]

7/8 yrds of ribbon per bow
if you need 4 bows
7/8 x 4 = 28/8 = 3 1/2 yards of ribbon needed

7 0

3 years ago