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Alexxandr [17]
4 years ago
10

The following set of ordered pairs is an example of direct variation, find the constant ratio between the variables. (Hint: Find

k.)
(2, 4) (5, 10) (7, 14) (11, 22)
A. k=2
B. k=8
C. k=-2
D. k= 1/2
Mathematics
1 answer:
Serhud [2]4 years ago
6 0
Direct variation looks like
y=kx, so

k=y/x

<span>(2, 4)      k=4/2=2
(5, 10)    k=10/5=2
(7, 14)    k=14/7=2
(11, 22)  k=22/11=2

Answer:A.k=2.</span>
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Find the value of this expression <br> (50 - 2) ÷ 4 - 7²<br><br> -40<br> -41<br> -37
UkoKoshka [18]

Answer:

The answer is <u>-37</u>.

Step-by-step explanation:

1) Simplify 50-2 to 48.

48 ÷ 4 - 7^{2}

2) Simplify 7^{2} to 49.

48 ÷ 4 - 49

3) Simplify 48 ÷ 4 to 12.

12 - 49

4) Simplify.

-37

<u>Therefor, the answer is </u><u>Option C) -37</u><u>.</u>

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if the perimeter of Milo's rectangular backyard Is 16 feet. which of the following could be the dimensions of the yard? circle a
postnew [5]

Answer:

the answer is a and d

Step-by-step explanation:

6 + 6 + 2 +2 = 16

3 + 3 + 5 + 5 = 16

to find perimeter, double each factor and add :)

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3 years ago
Courtney is ordering nachos at a restaurant, and the server tells her that she can have up to three toppings: pico de gallo, oni
aalyn [17]

Answer:

Probability = \frac{1}{9}

Step-by-step explanation:

Given

Toppings: Pico de gallo, Onions and Steak

Required

The probability of getting Onions and Steak

The probability is calculated using:

Probability = P(Onion)\ and\ P(Steak) --- because the events are independent

P(Onion) = \frac{n(Onion)}{Total}

P(Onion) = \frac{1}{3}

P(Steak) = \frac{n(Steak)}{Total}

P(Steak) = \frac{1}{3}

So, we have:

Probability = P(Onion)\ and\ P(Steak)

Probability = P(Onion)\ *\ P(Steak)

Probability = \frac{1}{3} * \frac{1}{3}

Probability = \frac{1}{9}

3 0
3 years ago
Order the group of quadratic functions from widest to narrowest graph. y=6x^2
LenaWriter [7]
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3 0
3 years ago
Read 2 more answers
An isosceles triangle whose equal sides measure 8 and whose altitude drawn to the base measures 8
viva [34]

The question is incomplete, the complete question is here

Find the measures of the angles of an isosceles triangle whose equal sides measure 8 and whose altitude drawn to the base measures 4

Answer:

The measures of the angles of the isosceles triangle are 30°, 30° and 120°

Step-by-step explanation:

In a triangle whose sides a, b, c and angles A, B and C, where a is opposite to ∠A, b is opposite to ∠B, and c is opposite to ∠C, the given is

  • a = c
  • m∠A = m∠C

The height from ∠B to side b is 4 units

That means the length of the height is half the length of each equal sides, then there is a right triangle its hypotenuse is 8 and the side opposite to the base angle is 4, so we can find the measure of the base angle by using the rule sin(base angle) = \frac{altitude}{a}

∵ The base angles are ∠A and ∠C

∵ a = c = 8

∵ The altitude to b is 4

∵ sin(A)=\frac{4}{8}=\frac{1}{2}

- By using  sin^{-1}

∴ m∠A = sin^{-1}(\frac{1}{2})

∴ m∠A = 30°

∵ m∠A = m∠C

∴ m∠C = 30°  

Use the rule of the sum of the measures of the interior angle of a Δ is 180° to find m∠B

∵ m∠A + m∠C + m∠B = 180

∵ m∠A = m∠C = 30° 

∴ 30° + 30° + m∠B = 180°

∴ 60 + m∠B = 180

- Subtract 60 from both sides

∴ m∠B = 120°

The measures of the angles of the isosceles triangle are 30°, 30° and 120°

5 0
3 years ago
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