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2 years ago

A line that includes the points (j,

Mathematics

1 answer:

djverab [1.8K]2 years ago

3 0

Answer:

j = 7.8.

Step-by-step explanation:

The slope of the line = difference in y-values / corresponding difference in x-values.

Slope = (7-3) / (j-5) = 10/7

so 10(j - 5) = 7*4

10j - 50 = 28

10j = 78

j = 7.8.

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garri49 [273]

Answer:

Step-by-step explanation:

Cross multiplication can be used but not in the beginning. First x should be isolated.

$3 +\frac{5}{x}=\frac{7}{x}\\\\$

Now subtract $\frac{5}{x}$ from both sides

$3 = \frac{7}{x}-\frac{5}{x}\\\\3=\frac{7-5}{x}\\\\3=\frac{2}{x}$

In this stage, cross multiplication can be used.

$\frac{3}{1}=\frac{2}{x}\\\\3*x=2*1\\\\x = \frac{2}{3}$

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3 years ago

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If n ≠ 0, which quadratic equation is written in standard form A.) x+x^2=n B) -x^2-x-n=0 C) x+x^2+n=0 D) x^2-x=n.Be sure to expa

Galina-37 [17]

Answer:

B. -x^2 - x - n = 0.

Step-by-step explanation:

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3 years ago

Two upward forces are acting on a bolt. One force of 60.5lb acts at an angle of 82.4 above the horizontal and the other force of

Lera25 [3.4K]

Answer:

Fv = 79.63 lb

The total upward force Fv is 79.63 lb

Step-by-step explanation:

We need to determine the total upward force, the y component of force;

Given;

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Force F2 = 37.2 lb, (82.4-50.5)° above horizontal

The vertical component of Force F1 and F2 is;

Fv = 60.5sin(82.4) + 37.2sin(82.4-50.5)

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3 years ago

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grigory [225]

Answer:

Step-by-step explanation:

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let s double check

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so the solution is

$\boxed{f(x)=\sqrt{x}+4}$

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