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lozanna [386]
2 years ago
6

Will mark brainliest+ 10 points

Mathematics
1 answer:
olga2289 [7]2 years ago
3 0
The answer without a doubt is 69/420
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Prove that ΔABC and ΔEDC are similar.
Lesechka [4]

Answer:

∠DCE is congruent to ∠CBA by the Vertical Angles Theorem and 15 over 5 equals 12 over 4 shows the corresponding sides are proportional; therefore, ΔABC ~ ΔEDC by the SSS Similarity Postulate.

Step-by-step explanation:

5 0
2 years ago
What is the sum of -14<br> and -15?
Anton [14]
-14 + (-15) = -14 - 15 = -29
Hope it helps !!! Brainliest if it is!!
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2 years ago
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This is due today, please help!!! I will give brainliest.
WINSTONCH [101]

Answer:

Step 1, all the exponents are increased by 4

Step-by-step explanation:

The first incorrect step occurred in Step 1, where all the exponents were increased by 4.

This is mathematically incorrect due to exponential rules. When distributing exponents inside parentheses, we have to multiply the existing exponents inside the parentheses by the exponent outside the parentheses.

For example, (x²)³ is not x²⁺³, but rather, x⁽²⁾⁽³⁾.

We multiply the exponents instead of adding them together.

Therefore, the correct Step 1 should multiply all the variables' exponents by 4.

Steps 2 and 3 are correct since we do add the exponents when multiplying exponents with the same base, and we do subtract exponents with the same base when dividing.  

6 0
3 years ago
7/10, 3/20, 22/25, 2/5 in order from least to greatest
swat32
3/20, 2/5, 7/10 & 22/25
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3 years ago
Evaluate Y - R for R= -2 and Y= -7
Semmy [17]

Answer:

5

Step-by-step explanation:

-2 - (-7)

you have to do the opposite of the sign and switch the last number from neg to pos

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