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3 years ago

I will give Brainliest to whoever does all PLEASE HELP

Mathematics

1 answer:

Thepotemich [5.8K]3 years ago

7 0

I know
1=d
2=d

3=d
4= d
6=c
5=a

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When solving using Elimination:

Zielflug [23.3K]

Answer:

Multiply 1st equation by -4

Step-by-step explanation:

Multiply the 1stequation by-4

-20x+8y=-44. Leave 2nd equation

8x-8y=-16

See how the 8y cancels with -8y

6 0

3 years ago

The ratio of pink roses bushes to white rose bushes in the city Garden is about 12 to 15. If there were 92 pink rose bushes, abo

andreyandreev [35.5K]

Answer:

$115\ white\ rose\ bushes$

Step-by-step explanation:

Let

x------> the number of pink roses bushes

y----> the number of white rose bushes

we know that

$\frac{x}{y} =\frac{12}{15}$

$y=\frac{15}{12}x$ -----> equation A

$x=92$

substitute the value of x in the equation A

$y=\frac{15}{12}(92)=115\ white\ rose\ bushes$

8 0

3 years ago

Help and I’ll give brainliest

Vaselesa [24]

Answer:

They purchased 11 Packets

Step-by-step explanation:

C=11p + 30

6 0

3 years ago

Original price: $30 Markdown: 16%<br> Please help

melomori [17]

Answer:

$25.86

Original price. 30.00

Markdown percent 16%

Markdown 4.14

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Which equation(s) have x = –3 as the solution? log3(2x + 15) = 2 log5(8x + 9) = 2 log4(–20x + 4) = 3 logx81 = 4

baherus [9]

Answer:

log_3(2x+15)=2 and log_4(-20x+4)=3

Step-by-step explanation:

Plug it in and see!

$log_3(2x+15)=2\\log_3(2(-3)+15)=2\\log_3(-6+15)=2\\log_3(9)=2\\\text{ This is a true equation because } 3^2=9\\\\\\log_5(8(-3)+9)=2\\log_5(-24+9)=2\\log_5(-15)=2\\\\\text{ Not true because you cannot do log of a negative number }\\\\log_4(-20(-3)+4)=3\\log_4(64)=3\\\text{ this is true because } 4^3=64\\\\\\log_x (81)=4\\log_{-3}(81)=4\\\text{ the base cannot be negative }\\\\\\\\\text{ There is only two options here} \\\\log_3(2x+15)=2 \text{ and } log_4(-20x+4)=3$

6 0

3 years ago

Read 2 more answers