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romanna [79]
3 years ago
9

How do you solve this without substituting 2a+b=-5 -5a+b=16

Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

Answer:

answer shown in picture above

Step-by-step explanation:

you need to multiply them so that you can simplify it. the bottom b will become negative and the b's will x out

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The table shows the average weight of animals. How many more tons does a blue whale weigh than an African elephant? Explain how
AVprozaik [17]

Answer:

The African elephant weighs <u>111.5 tons</u> less than a blue whale.

Step-by-step explanation:

Given:

Animal                         Weight(pounds)

African Elephant            15,000

Blue Whale                   238,000

Now, to find the weight of how more tons does a blue whale weigh than an African elephant.

As given, 1 ton = 2,000 pounds.

So, to convert the weight from pound to tons by dividing:

African elephant =15000\div 2000=7.5\ tons.

Blue whale =238000\div 2000=119\ tons.

Now, to get the weight of how more tons is blue whale weigh than an African elephant we subtract:

Blue\ whale - African\ elephant

=119 tons-7.5tons

=111.5\ tons

Therefore, the African elephant weighs 111.5 tons less than a blue whale.

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3 years ago
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garik1379 [7]
I believe that the answer is a
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3 years ago
Evaluate when a = 8 and b = -4 a(a - b) ÷ (a + b) A) -12 B) 8/3 C) 10 D) 24 what the answer
puteri [66]

Answer:

Step-by-step explanation:

a = 8 and b = -4 a(a - b) ÷ (a + b)

A) -12

B) 8/3

C) 10

D) 24

ANSWER IS D) 24

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3 years ago
Which of the following would be considered a monomial? Select all that apply
Vaselesa [24]

Answer:

A and B

Step-by-step explanation:

Since these both only have one term and number/variable, making it a monomial.

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2 years ago
Ten students begin college at the same time. The probability of graduating in four years is 63%. Which expanded expression shows
Lynna [10]

Answer: the answer is a!


Step-by-step explanation:


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3 years ago
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