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Rudik [331]
4 years ago
7

Janelle earned 90% on a test and got 63 points. How many total points were possible on the test?

Mathematics
1 answer:
aliina [53]4 years ago
8 0

Answer:

70

Step-by-step explanation:

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What is the equation of the line that passes through (4, -1)
Mekhanik [1.2K]

Answer:

Step-by-step explanation:

answer: y = -5 + 19

We can use the point-slope formula to find an equation to solve this problem. The point-slope formula states: (y−y1)=m(x−x1)

Where m is the slope and (x1y1) is a point the line passes through.

Susbtituting the slope and values from the point from the problem gives:

(y−−1)=−5(x−4)

(y+1)=−5(x−4)

We can also solve this for the slope-intercept form. The slope-intercept form of a linear equation is: y=mx+b

Where m is the slope and b is the y-intercept value.

Substitute the slope from the problem for m and the values of the point from the problem for x and y and solve for b:

−1=(−5⋅4)+b

−1=−20+b

20−1=20−20+b

19=0+b

19=b

We can substitute for m and b in the formula to find the equation:

y=−5x+19

6 0
2 years ago
Read 2 more answers
3(x-4) = 2(-2x + 1)<br>this is confusing me​
nata0808 [166]

Answer:

x = 2

Step-by-step explanation:

<em>Distribute</em>

3 (−4) = 2 (−2+1)

3 − 12 = 2 (-2x +1)

<em>Distrubute again</em>

3x - 12 = -4x + 2

<em>Add twelve to both sides of the equation</em>

<em>Simpfly</em>

3x = -4x + 14

<em>Add 4x to both sides of the equation</em>

<em>simpfly</em>

7x = 14

<em>Divide both sides of the equation by the same term</em>

<em>Simpfly</em>

x = 2

5 0
3 years ago
Using the X Method to Factor Factor the polynomial completely using the X method. x2 + 13x – 48
devlian [24]
The answer is 14 - 48 i did use foil method btw
8 0
3 years ago
Shana is doing a craft project
Elenna [48]

Answer:

3(5 + 7)

Step-by-step explanation:

Shana is carrying our a craft project

She is making use of yarns and stuck

She has three green yarn pieces and seven blue yarn pieces

She has three times as many yarn pieces

Therefore the expression can be represented as follows

3(5 + 7)

5 0
3 years ago
1-sinA+cosA / sinA+cosA-1 = 1+cosA/sinA​
Art [367]

<u>Solution:</u>

\dfrac{\left[\left(\sin ^{2} A+2  \times \sin A  \times (1-\cos A)+(1-\cos A)^{2}\right]\right.}{\left[\left(1-\cos ^{2} A\right)-(1-\cos A)^{2}\right]}

\dfrac{\left[\left(1-\cos ^{2} A\right)+2  \times  \sin A  \times (1-\cos A)+(1-\cos A)^{2}\right]}{\left[(1-\cos A)(1+\cos A)-(1-\cos A)^{2}\right]}

\dfrac{(1-\cos A)[1+\cos A+2 \sin A+1-\cos A]}{[1-\cos A][1+\cos A-1+\cos A]}

\dfrac{[2+2 \sin A]}{[2  \times  \cos A]}

\dfrac{2(1+\sin A)}{2 \times \cos A}

\dfrac{1+\cos A}{\sin A}

<u>Hence Proved.</u>

6 0
3 years ago
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