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mixas84 [53]
2 years ago
7

A train travels at 47 miles per hour. Which equation

Mathematics
1 answer:
garri49 [273]2 years ago
8 0

Answer:

d

Step-by-step explanation:

I think its d but I'm not quite sure

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What is the solution set for this inequality? |3x+3|≤9 Graph the solution set on the number line.
soldi70 [24.7K]

Answer:

Step-by-step explanation:

because it's an absolute value inequality, there are two inequalities to solve

3x+3 ≤ 9 and 3x+3 ≥ -9, now we solve them separately

x ≤  3 and x ≥ -4, which is -4 ≤ x ≤ 3

8 0
3 years ago
Read 2 more answers
Need help sorry to bother please help I don't get it.
poizon [28]

so it says 6 times as old as June

so that would be 6x


then it said the sum so that's addition is no less than so that's subtraction


so it would be


X because we June's father age

so x times 6 > 77



3 0
3 years ago
Enter the equation of the line in slope-intercept form. Slope is -1/2, and (-9,4) is on the line. The equation of the line is y=
dezoksy [38]

Answer:

y=\displaystyle-\frac{1}{2}x-\displaystyle\frac{1}{2}

Step-by-step explanation:

Hi there!

Slope-intercept form: y=mx+b where <em>m</em> is the slope and <em>b</em> is the y-intercept (the value of y when x is 0)

<u>1) Plug in the slope (</u><u><em>m</em></u><u>)</u>

We're given that the slope is \displaystyle-\frac{1}{2}. In y=mx+b, replace <em>m</em> with \displaystyle-\frac{1}{2}:

y=\displaystyle-\frac{1}{2}x+b

<u>2) Determine the y-intercept (</u><u><em>b</em></u><u>)</u>

y=\displaystyle-\frac{1}{2}x+b

We're given the point (-9,4). Plug this point into the equation as (x,y) and solve for <em>b</em>:

4=\displaystyle-\frac{1}{2}(-9)+b\\\\4=\displaystyle\frac{9}{2}+b

Subtract \displaystyle\frac{9}{2} from both sides to isolate <em>b</em>:

4-\displaystyle\frac{9}{2}=\displaystyle\frac{9}{2}+b- \displaystyle\frac{9}{2}\\\\\displaystyle-\frac{1}{2} = b

Therefore, the y-intercept is \displaystyle-\frac{1}{2}. Plug this back into y=\displaystyle-\frac{1}{2}x+b as <em>b</em>:

y=\displaystyle-\frac{1}{2}x+(\displaystyle-\frac{1}{2})\\\\y=\displaystyle-\frac{1}{2}x-\displaystyle\frac{1}{2}

I hope this helps!

6 0
3 years ago
Can you please help me​
Mariana [72]

Answer:

star fish 11/20   ell 4/20 urchins 5/20

Step-by-step explanation:

8 0
3 years ago
Alkena and Hsu together earn $84,369 per year, If alkena earns $12,468 more per year than Hsu, the how much of them earn per yea
scoray [572]

Answer:

Hsu makes $35,950.50 and Alkena makes $48,418.50

Step-by-step explanation:

Create a system of equations, where h is the amount Hsu makes and a is the amount Alkena makes:

a + h = 84,369

a = h + 12,468

Solve by substitution by plugging in h + 12,468 as a:

h + 12,468 + h =  84,369

2h + 12,468 = 84,369

2h = 71,901

h = 35,950.50

Plug this into the equation, a = h + 12,468 , to solve for a

a = 35,950.50 + 12,468

a = 48,418.50

So, Hsu makes $35,950.50 and Alkena makes $48,418.50

3 0
2 years ago
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