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Kazeer [188]
3 years ago
6

-2x+5y=20 solve for y​

Mathematics
1 answer:
Natali5045456 [20]3 years ago
3 0

Answer:

4

Step-by-step explanation:

See the image below:)

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The length of a rectangle is 3 less than 2 times its width. The area of the rectangle is 77 squared feet.
larisa86 [58]

Answer:

Let the Width(W) =X feet

then Length(L) = (2X-3)feet

Area of the rectangle (A)=77 square feet

A = L× W

L×W=A

(2X-3) × X = 77

2X²- 3X =77

2X²-3X -77=0

Solving it using the factorization method

2X²-14X+11X-77=0

(2X²-14X)+(11X-77)=0

2X(X-7) + 11(X-7)=0

(2X+11)(X-7) =0

When 2X+11=0

X= -11/2

When X-7=0

X = 7

Therefore X= 7

Width = X feet

= 7feet

The width is 7feet

Length = (2X-3)feet

= (2×7) -3)feet

=(14-3)feet

=11feet

3 0
2 years ago
2617 to the nearest thousand
Sliva [168]

Answer:

3000

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which equation shows y=−12x+4 is in standard form?
Dmitriy789 [7]

Answer:

-8x

Step-by-step explanation:

7 0
3 years ago
12. Currently, there are 350 students in the seventh grade at Winchester
sweet [91]

Answer:

Winchester Heights Middle School plan to have 385 students in the  upcoming school year.

Step-by-step explanation:

Total number of students in the seventh grade at Winchester  Heights Middle School = 350

For the upcoming school year, they are planning to  increase the number of seventh graders by 10%.

Rate of increase = r = 10% = 0.1

Formula :N(t)=N_0(1+r)^t

Where N_0= initial population = 350

r = rate of increase =0.1

N(t)=Population after t years

t = time in years

So, Population after 1 year = 350(1+0.1)^1 =385

Hence  Winchester Heights Middle School plan to have 385 students in the  upcoming school year.

5 0
3 years ago
Quadrilateral OPQR is inscribed inside a circle as shown below. What is the measure of angle O? You must show all your work.
likoan [24]

Answer:

88 deg

Step-by-step explanation:

Opposite angles of an inscribed quadrilateral are supplementary. That means that the sum of the measures of angles O and Q is 180 deg.

2x + 2x + 4 = 180

4x + 4 = 180

4x = 176

x = 44

m<O = 2x = 2(44) = 88

Answer: 88 deg

4 0
3 years ago
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