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lana [24]
3 years ago
10

If three times a number is increased by 4, the results is -8. find the number

Mathematics
2 answers:
skad [1K]3 years ago
6 0

Answer: -4

Step-by-step explanation:

3x + 4 = -8

3x= -12

x = -4

<!> Brainliest is appreciated! <!>

Irina18 [472]3 years ago
5 0

Answer:

-4

Step-by-step explanation:

if you multiply -4 by three, you get -12

if you add 4 to that, you get -8, therefore, the answer is -4

…. das a lot of 4's

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A shoe store by packs of socks wholesale for $5 each and marks up by $40. The store decides to discount the packs of the socks b
Tpy6a [65]

Answer:

No

Step-by-step explanation:

Price after the socks is marked up = $40 + $5 = $45

If the sock is discounted by 40%, the price of the socks would be 60% of the original price

0.6 x $45 = 27

The discounted price is $27

6 0
3 years ago
1000000000+100000000000/42544*0
jolli1 [7]

Answer:

1,000,000,000

Step-by-step explanation:

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Given that tan theta = -4/7, and 270° &lt; theta &lt; 360°, what is the exact value of sec theta​
aleksley [76]

Answer:

sec Θ = \frac{\sqrt{65} }{7}

Step-by-step explanation:

Using the trigonometric identity

sec²Θ = tan²Θ + 1

Since 270° < Θ < 360° ← that is fourth quadrant, then

sec Θ > 0, thus

sec²Θ = (- \frac{4}{7})² + 1 = \frac{16}{49} + 1 = \frac{65}{49}, then

sec Θ = \sqrt{\frac{65}{49} } = \frac{\sqrt{65} }{7}

6 0
3 years ago
(50 points for best and correct answer ASAP no steps needed) A family is building a rectangular fountain in the backyard. The ya
Pie

Answer:

A) 34x²

Step-by-step explanation:

6x * 7x = 42x²

2x * 4x = 8x²

42x - 8 x = 34x²

5 0
3 years ago
The given line passes through the points (-4, -3) and (4,
drek231 [11]

Answer:

y = 2x + 11

Step-by-step explanation:

The first thing we need to do

is to find the slope of the line that passes through the points (-4,-3) and (4,1)

Mathematically, that would be;

m = y2-y1/(x2-x1)

where (x1,y1) = (-4,-3) and (x2,y2) = (4,1)

substituting these. values we have;

m = (1-(-3))/(4-(-4)) = 4/8 = 1/2 or 0.5

Now we are told this line is perpendicular to another line that passes through another point.

We can find the slope of this other line

Since both lines are perpendicular, the product of their slope is -1.

Thus , -0.5 * m = -1

m = -1/-0.5 = 2

So the slope of the other line is 2

Using the point-slope form;

y-y1= m(x-x1)

The point for the other line is (-4,3)

So the equation will be

y-3 = 2(x+4)

y-3 = 2x + 8

y = 2x + 11

8 0
3 years ago
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