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liraira [26]
3 years ago
10

Write an equation for the parabola that passes through (-2, 7) , (1, 10) , and (2, 27) .

Mathematics
1 answer:
vlada-n [284]3 years ago
5 0
(-2,7) (1,10) (2,27)
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Blababa [14]
The correct answer is B x=-3 and x= positive 5/2
7 0
3 years ago
The points , (−15,1) and , (−7,r) lie on a line with slope 5/4. Find the missing coordinate r. Click image to enlarge
Nadya [2.5K]

The missing coordinate r is 11.

Solution:

Given points are (–15, 1) and (–7, r).

x_{1}=-15, x_{2}=-7, y_{1}=1 \text { and } y_{2}=7

Slope (m) = \frac{5}{4}

<u>To find the missing coordinate r:</u>

Slope formula:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Substitute the given values in the formula.

$\frac{5}{4}=\frac{r-1}{-7-(-15)}

$\frac{5}{4}=\frac{r-1}{-7+15}

$\frac{5}{4}=\frac{r-1}{8}

Do cross multiplication.

8 \times 5=4(r-1)

40 = 4r – 4

Add 4 on both side of the equation.

44 = 4r

Divide by 4 on both side of the equation.

11 = r

⇒ r = 11

Hence the missing coordinate r is 11.

6 0
3 years ago
5.2x+8+2.1x-3 which is an equivalent expression by combining like terms A. 5.2x+8+2.1x-3 B. 5.2x+5+2.1x C 13.2x-0.9x D 7.3x+5
satela [25.4K]

Answer: 7.3x + 5

Step-by-step explanation:

For us to solve the question, we have to solve 5.2x+8+2.1x-3 and the answer gotten will allow us know the equivalent expression.

= 5.2x+8+2.1x-3

= 5.2x + 2.1x + 8 - 3

= 7.3x + 5

Therefore, the correct answer is 7.3x + 5

7 0
3 years ago
In ΔABC, the measure of ∠C=90°, the measure of ∠A=40°, and BC = 2.6 feet. Find the length of CA to the nearest tenth of a foot.
vladimir1956 [14]

Answer:

3.1

Step-by-step explanation:

8 0
3 years ago
Help me do my homework
Nikolay [14]
For 1. (Monday), it is rational. For 2. It is C. For 3. It is -15/24 (I am assuming, it isn’t clear), -2 2/5 (Assuming) and -0.95. 4. Is less than 1. The decimal it is 0.625. 5. 11/5 is greater than 1. The decimal is 2.2. For 6. It is equal to 1. 1 is 1.000 or 1. In decimal form. For 7. It is less than 1. The decimal is 0.571. It is only for Monday. I hope this helps!
7 0
3 years ago
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