3 years ago

Explain how you can find the opposite of the opposite of any number without using a number line

1 answer:

4 0

Just make that number negative to find the opposite but the opposite of the negative number is going to be the original number again.

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70% of a number is 98.

Anni [7]

Set up the proportion:
70% - 98
90% - x

$\frac{70\%}{90\%}=\frac{98}{x} \\
\frac{7}{9}=\frac{98}{x} \\
\frac{7}{9}x=98 \\
x=98 \times \frac{9}{7} \\
x=14 \times 9 \\
x=126$

The answer is D. 126.

8 0

2 years ago

Alex sold 330 candy bars, milk chocolate candy bars sold for $2 each and white chocolate candy bars sold for $3 each. Alex sold

Alinara [238K]

Answer:

<em>Alex sold 330 white chocolate bars</em>

Step-by-step explanation:

let the milk chocolate candy be x and the white chocolate candy be y. then

then 2x+3y=990----1)

x+y=330-----2)

from eq 2) ⇒ x=330-y---------3)

Putting eq 3 in eq 1

2(330-y) +3y=990

660-2y+3y=990

y=990-660=330-----------4)

Putting eq4 in eq1

2x+3(330)=990

2x+990=990

2x=990-990

2x=0

x=0---------------------------5)

4 0

2 years ago

Large takes a square piece of cardboard and cut for it by 4 inch squares out of each corner because the sides up to make a box w

chubhunter [2.5K]

If the squares are 4 inches then the height of the sides will be 4 inches, so you multiply the area of the base times 4!

6 0

2 years ago

Equivalent expression

Nataly_w [17]

7(x+8) could work for that

8 0

2 years ago

Convert the angle 0=23/20 radians to degrees,

MrRa [10]

Answer:

207°

Step-by-step explanation:

3 0

2 years ago