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Helen [10]
3 years ago
12

Can someone help answer this please

Mathematics
1 answer:
Pani-rosa [81]3 years ago
4 0
B; C is wrong as it cannot be expressed by the speedometer, leaving A, B, and D. B is correct as is suggests accuracy to the best possibility. 

Merry Christmas! Hope I helped!
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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.

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3 years ago
Consider the polynomial equation x(x-3)(x+6)(x-7)=0 which of following are zeros in the equation?
Sergio [31]

Answer:

x=0,3,-6,7

Step-by-step explanation:

set each factor equal to zero and then solve for x.

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