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3 years ago

13

Find 2 numbers a and b whose sum is 4 and whose difference is -2

1 answer:

umka21 [38]3 years ago

7 0

Answer:

a = 1, b = 3.

Step-by-step explanation:

a + b = 4

a - b = -2 Adding to eliminate b:

2a = 2

a = 1

So 1 + b = 4

giving b = 3.

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Mrs. Giuntini’s lawn is triangle shaped with a base of 25 feet and a height of 10 feet. What is the area of Mrs. Giuntini’s lawn

Vedmedyk [2.9K]

$area \: = \frac{1}{2} bh \\ area \: = \frac{1}{2} (25)(10) \\ area = \frac{1}{2} 250 \\ area = 125 \: feet ^{2}$

4 0

3 years ago

Read 2 more answers

The interior angles of a triangle have measures 90°, 48°, and xº.<br> What is the value of x?

Ahat [919]

Answer:

42°

Step-by-step explanation:

The interior angles of a triangle always add to 180 degrees.

90+48+x=180

x=180-90-48

=42

x is 42°

6 0

3 years ago

Find the perimeter of WXYZ. Round to the nearest tenth if necessary.

yanalaym [24]

Answer:

C. 15.6

Step-by-step explanation:

Perimeter of WXYZ = WX + XY + YZ + ZW

Use the distance formula, $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$ to calculate the length of each segment.

✔️Distance between W(-1, 1) and X(1, 2):

Let,

$W(-1, 1) = (x_1, y_1)$

$X(1, 2) = (x_2, y_2)$

Plug in the values

$WX = \sqrt{(1 - (-1))^2 + (2 - 1)^2}$

$WX = \sqrt{(2)^2 + (1)^2}$

$WX = \sqrt{4 + 1}$

$WX = \sqrt{5}$

$WX = 2.24$

✔️Distance between X(1, 2) and Y(2, -4)

Let,

$X(1, 2) = (x_1, y_1)$

$Y(2, -4) = (x_2, y_2)$

Plug in the values

$XY = \sqrt{(2 - 1)^2 + (-4 - 2)^2}$

$XY = \sqrt{(1)^2 + (-6)^2}$

$XY = \sqrt{1 + 36}$

$XY = \sqrt{37}$

$XY = 6.08$

✔️Distance between Y(2, -4) and Z(-2, -1)

Let,

$Y(2, -4) = (x_1, y_1)$

$Z(-2, -1) = (x_2, y_2)$

Plug in the values

$YZ = \sqrt{(-2 - 2)^2 + (-1 -(-4))^2}$

$YZ = \sqrt{(-4)^2 + (3)^2}$

$YZ = \sqrt{16 + 9}$

$YZ = \sqrt{25}$

$YZ = 5$

✔️Distance between Z(-2, -1) and W(-1, 1)

Let,

$Z(-2, -1) = (x_1, y_1)$

$W(-1, 1) = (x_2, y_2)$

Plug in the values

$ZW = \sqrt{(-1 -(-2))^2 + (1 - (-1))^2}$

$ZW = \sqrt{(1)^2 + (2)^2}$

$ZW = \sqrt{1 + 4}$

$ZW = \sqrt{5}$

$ZW = 2.24$

✅Perimeter = 2.24 + 6.08 + 5 + 2.24 = 15.56

≈ 15.6

5 0

3 years ago

PLEASSEEE HELP ME !

aleksandr82 [10.1K]

(g+f) (3).

=16 hope this helps<3

8 0

2 years ago

You and your friend meet at the movie theater to see Flying Ninja Toenails 5p of Death. You arrive at 5:40. Your friend arrives

NikAS [45]

Answer:

Wait for 32minutes.

Step-by-step explanation:

i think you could made time Am or Pm that can make your questions good. i am nub grammar sorry haha

3 0

3 years ago