3 years ago

Find the root(s) of the equation x2 = 121?

Mathematics

2 answers:

Andru [333]3 years ago

6 0

±11

Step-by-step explanation:

Even NO. roots are always contain ±.

Rudiy273 years ago

4 0

Answer: C

Step-by-step explanation:

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What is the resulting equation when the expression for y in the second equation is substituted into the first equation?

Anni [7]

Answer: 3x + 6 -4x = 1

Simplify to -x + 6 = 1 because 3x - 4x = -1x

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4 years ago

A city has 3 new houses for every 9 old houses. If there are 15 new houses in the city, how many old houses are there?

Arisa [49]

Answer:

45 old houses

Step-by-step explanation:

new houses : old houses

3 : 9

15 : ?

(3 = 1st ratio and 9 = 2nd ratio)

To find the missing ratio, divide the first ratio from the new ratio:

15 / 3 = 5

Take the product and multiply that by the second ratio to find the missing ratio:

9 x 5 = 45

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Please help me I am struggling

Oxana [17]

Answer:

it's 48

Step-by-step explanation:

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Alborosie

Turn it into math terms bit by bit. let x be "a number"

8 times a number is 8×x

increased by 9 is +9

7 times a number is 7×x

exceeds is minus

by 15 is =15

now we put it together.

$8 \times x + 9 - 7 \times x = 15$
solve
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Estimate the sum. 369,228 + 420,577

Softa [21]

The sum is = 789,805

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