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dsp73
2 years ago
10

Find the value of x. 3) 2x (x + 21)​

Mathematics
1 answer:
Xelga [282]2 years ago
5 0

To find the x-intercept, substitute in

0

for

y

and solve for

x

. To find the y-intercept, substitute in

0

for

x

and solve for

y

.

x-intercept(s):

(

0

,

0

)

,

(

−

21

,

0

)

y-intercept(s):

(

0

,

0

)

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A rectangular billboard is 30 feet by 18 feet. If a gallon of paint covers 250 square feet, how many gallons should be purchased
Vikentia [17]

Answer:

C. 3 gallons

Step-by-step explanation:

30 ft × 18 ft = 540 ft²

540 ft² ÷ 250 = 2.16

2.16 is not an option so you would have to buy 3 gallons and only use 2.16 gallons.

3 0
3 years ago
Someone explain it please
Alina [70]

9514 1404 393

Answer:

  ∠A = 44°

Step-by-step explanation:

In order to find the measure of angle A, you need to know the value of the variable x. This means you need some relation that you can solve to find x.

Happily, that relation is "the sum of angles in a triangle is 180°." This means ...

  84° +(x +59)° +(x +51)° = 180°

  (2x + 194)° = 180° . . . collect terms

  2x = -14 . . . . . . . . . . divide by °, and subtract 194

  x = -7 . . . . . . . . . . . .divide by 2

Now, the measure of angle A is ...

  ∠A = (x +51)° = (-7 +51)°

  ∠A = 44°

4 0
3 years ago
Did we invent math or did we discover it? I need help asap plz. Don't answer if you don't know plz
Wewaii [24]

Answer:

The only reason mathematics is admirably suited describing the physical world is that we invented it to do just that. It is a product of the human mind and we make mathematics up as we go along to suit our purposes. ... Mathematics is not discovered, it is invented.

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Sports a pennant for the sports teams at lincoln high school is in the shape of an isosceles triangle. if the measure of the ver
PIT_PIT [208]
The base angles are congruent because it's an isosceles triangle the base angles would both equal 81
5 0
3 years ago
What is the answer to this question having trouble answering it​
Luda [366]

Answer:

9

Step-by-step explanation:

KL + KJ = 17

2 + 3x + 5x - 1 = 17 add like terms

8x + 1 = 17 subtract 1 from both sides

8x = 16 divide both sides by 8

x = 2

KL = 5x - 1 replace x with 2

5*2 - 1 = 9

4 0
3 years ago
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