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3 years ago

Which equation is part of solving the system by substitution?

Mathematics

2 answers:

gayaneshka [121]3 years ago

5 0

Answer:

4(11-y)²-3y²=8

Step-by-step explanation:

x+y=11

x=11-y

melomori [17]3 years ago

3 0

Answer:

Step-by-step explanation:

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URGENT!! WILL MARK BRAINLIEST IF CORRECT!!!

kow [346]

Answer:

Story 2 because it is talking about how much they spend. ANOTHER HINT: That equation has all the numbers in story 2. They key is to look at how the problem is set up.

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3 years ago

Find the value of angle x <br><br><br><br>pls answer

Fiesta28 [93]

Answer:

110

Step-by-step explanation:

lets assume y is the angle next to x which should complete to form a 360.

50 + 25 + 35 + y = 360

y = 250

x + y = 360

x + 250 = 360

x = 110

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2 years ago

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Given that f(x) = x2 + 10x + 21 and g(x) = x + 7, find (f•g)(x) and express

sammy [17]

Answer:

Step-by-step explanation:

$given \\ f(x) = x ^{2} + 10x + 21 \: and \: g(x) = x + 7$

$as \: we \: know \: (f.g)x \: is \: same \: as$

$f(g(x))$

$so \:$

$f(x + 7) = ( x + 7) ^{2} + 10(x + 7) + 21$

$f(x + 7) = {x}^{2} + 14x + 49 + 10x + 70 + 21$

$f(x + 7) = x^{2} + 24x + 140$

$therefore$

$(f.g)x = {x}^{2} + 24x + 140$

3 0

3 years ago

Need Help fast !the question is in the pictures.

nexus9112 [7]

It's a my homie because of the proportion in the initial explanation

5 0

3 years ago

Read 2 more answers

In an Animal shelter, the only animals they keep are dogs and cats. The ratio of dogs to animals is 5 to 8. There are 25 dogs. F

maksim [4K]

Answer:

c=15

Step-by-step explanation:

5 dogs --------- 3 cats

25 dogs---------c cats

c=(25x3)/5

=75/5

=15 cats

3 0

3 years ago