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sdas [7]
1 year ago
14

guess my numbers. the first number is two more than the second number. when I add two times the first number to five times the s

econd I get 25.
Mathematics
1 answer:
V125BC [204]1 year ago
4 0

Solution

let the numbers be

First number = x +2

second number = x

2 X first number = 2(

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One number is five more than another. If their sum is increased by nine, the result is 60. Find the numbers.
svlad2 [7]

Answer:

The two numbers are 23 and 28

Step-by-step explanation:

We are given that

X = Y + 5\\and\\(X+Y) + 9 = 60\\X+Y = 51\\(Y+5) + Y = 51\\2Y + 5 = 51\\2Y = 46\\Y = 23\\\\X = Y + 5\\X = 23 + 5\\X = 28

4 0
3 years ago
Write (8a^-3)^2/3 in a simplest form. <br> a. a^2/4 <br> b. 4a^2<br> c. 1/4a^2 <br> d. none of these
xz_007 [3.2K]
(8a^{-3})^\frac{2}{3}=(8 \cdot \frac{1}{a^3})^\frac{2}{3}=(\frac{8}{a^3})^\frac{2}{3}=\sqrt[3]{(\frac{8}{a^3})^2}=\sqrt[3]{\frac{64}{a^6}}=\frac{\sqrt[3]{64}}{\sqrt[3]{a^6}}=\frac{4}{a^2}

It doesn't equal any of the answers A, B, C.
The answer is D.
3 0
3 years ago
30% of what number is<br> 165
Contact [7]

Answer:

550

Step-by-step explanation:

165 x 100= 16500/30=550

7 0
2 years ago
Harry received a package for his birthday. The package weighed 350,000 centigrams. Select the conversions that are equivalent to
notsponge [240]

Given:

The package weighed 350,000 centigrams.

To find:

The conversions that are equivalent to 350,000 centigrams

Solution:

We know that,

1 centigrams (cg) = 0.000001 kilograms (kg)

1 cg = 0.1 decigrams (dg)

1 cg = 0.001 dekagrams (dag)

1 cg = 0.01 grams (g)

Using these conversions, we get

350,000 centigrams = 3.5 kilograms

350,000 centigrams = 35,000 decigrams

350,000 centigrams = 350 dekagrams

350,000 centigrams = 3,500 grams

Therefore the correct options are C and D.

5 0
3 years ago
How to know if an angle is congruent?
Svet_ta [14]

Answer:

Two angles are congruent if they have the same measure. If you didn't already know, when two lines intersect the vertical angles formed are congruent. For example, all the angles in a square are congruent. All the angles in a regular pentagon are 108°, therefore all the angles are congruent because they are the same.

Step-by-step explanation: Hope this helps:).........if not sorry:(

4 0
2 years ago
Read 2 more answers
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