All categories

3 years ago

Evaluate the algebraic expression for the given values of x = 3 and y = 4 7x - 2y - 1 =

Mathematics

1 answer:

stellarik [79]3 years ago

3 0

Step-by-step explanation:

The expression is 7x-2y-1.

If x=3, then you multiply 3 and 7.

7x3=21.

21-2y-1

If y=4, then you multiply 4 and 2.

4x2=8.

21-8-1

Then you combine like terms.

21-9

So the answer is 11.

Hope it helps!

You might be interested in

Please answer this correctly

katen-ka-za [31]

Answer:

Step-by-step explanation:

Okay so there is 32 cups in 8 quarts and he sold 6 cups Saturday and 18 cups Sunday.

Add 8+18

Subtract 24-32 to get 8

6 0

3 years ago

Read 2 more answers

Z is..? The problem is attached as a png!

VikaD [51]

Answer:

Step-by-step explanation:

What i would do is multiply both sides by 2z + 1

so you get z-6=20z+10

-19z=16

z=-16/19

5 0

2 years ago

Read 2 more answers

. A rectangular garden will be divided into two plots by fencing it on the diagonal. The diagonal distance from one corner of th

ASHA 777 [7]

Answer:

Step-by-step explanation:

The width = x

The length of the garden is three times the width => the length = 3x

The diagonal distance is five yards longer than the width=> the width=x+5

pythagorean theorem:

$(x+5)^{2} = 3x^{2} +x^{2} \\=> x +5 = \sqrt{( 3x)^{2} +x^{2}} \\=> x+5= \sqrt{10x^{2} } \\=>x+5= \sqrt{10} x\\=> \sqrt{10} x - x=5\\=> x= \frac{5+5\sqrt{10} }{9} (yd)\\\\ the diagonal = x+5 = \frac{5+5\sqrt{10} }{9} +5= \frac{50+5\sqrt{10} }{9} (yd)$

My English is not too good but I hope you will understand.

5 0

2 years ago

Which of the following systems has equations that are dependent?

Mumz [18]

C because its value depend on the value of x

4 0

3 years ago

Which rectangle is similar to a rectangle 12 inches wide and 18 inches long

forsale [732]

Answer:

do u have pics?

Step-by-step explanation:

7 0

3 years ago