3 years ago

Can someone help answer this please

1 answer:

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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3 years ago

Write the quadratic equation in factored form. be sure to write the entire equation.x 2 + x - 12 = 0

chubhunter [2.5K]

X^2 + x - 12 = 0

(x+4)(x-3) = 0

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3 years ago

Given the equation -4Square root x-3=12, solve for x and identify if it is an extranous solution

Nitella [24]

-4sqrt(x)-3 = 12 -> sqrt(x) - 3 = -3 -> sqrt(x) = 0
so x = 0, only solution, no extraneous solution

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4 years ago

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Each week you drive 150 miles your car gets 25 miles a gallon and gas prices are three dollars per gallon how much gas will you

mixas84 [53]

Number of gallons of gAS USED / WEEK = 150/25 = 6 gallons

Cost = 6 * 3 = 18 dollars (answer).

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3 years ago