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vovangra [49]
3 years ago
8

Solve the system of equations using substitution y=-4x+5 y=3x-16

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0

Answer:

(7 -7)

Step-by-step explanation:

Y= -4x +5-----------1

Y= 3x -16----------2

Y-5= 4x

X= (y-5)/4

Substitute in (eqn 2)

( tired )

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1000+50-36+7×9+8÷5×2+1​
melomori [17]

Answer:

949.2

Step-by-step explanation:

To solve this equation, you must use P.E.M.D.A.S...

First, solve 7x9 and 5x2...

7x9= 63  5x2 = 10

So...

1000+50-36+63+8÷10+1

Next, solve 8÷10 and get 0.8

So...

1000+50-36+63+0.8+1

Then, solve 1000 + 50, and 36+63, and that result with 0.8 and that with 1.

So...

1050-100.8

The Solve!

949.2

Hope this helps!

<em>-kiniwih426</em>

7 0
3 years ago
A kitchen measures 3.75 meters by 4.2 meters.
dalvyx [7]

Answer:

a. A_{(kitchen)}=15.75\ m^2

b. A_{(total)}=39.375\ m^2

Step-by-step explanation:

The formula for calculate the area of a rectangle is:

A=lw

Where "l" is the lenght and "w" is the width

a. We know that the kitchen measures 3.75 meters by 4.2 meters; then we can say that:

l=3.75\ m\\\\w=4.2\ m

Therefore, substituting these values into the formula, we get that the area of the kitchen is:

A_{(kitchen)}=(3.75\ m)(4.2\ m)=15.75\ m^2

b. The area of the living room is one and a half times (1.5 times) that of the kitchen, this is:

A_{(living)}=(1.5)(15.75\ m)=23.625\ m^2

Therefore, the total of the living room and the kitchen is:

A_{(total)}=15.75\ m^2+23.625\ m^2=39.375\ m^2

3 0
3 years ago
Please everything that I put on this app no one has answered I’m just wasting points now
zloy xaker [14]

Answer:

QR=18

Step-by-step explanation:

QR/QO =QS/QP (proportionality theorem...OP||RS )

QR/39 =24/52

52QR = 24(39)

52Q2=936

QR=18

3 0
2 years ago
What is 0.35 as a simplified fraction and why??
avanturin [10]

Answer:

7/20

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
4(b-2)-10=2(b+3)<br> B=<br> PLEASE HELP ME!!!! Show work too
AnnyKZ [126]

Answer:

B = 12

Step-by-step explanation:

Give Brainllest plz

3 0
2 years ago
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