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3 years ago

The number 88 is decreased to 78. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

Mathematics

1 answer:

ololo11 [35]3 years ago

6 0

0.11% would be the closer percent.

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Someone please help me with this one quick

astraxan [27]

The length of AC is 16 km.

Solution:

Given data:

AB = c = 14 km, ∠A = 30° and ∠B = 89°

AC = b = ?

Let us first find angle C:

Sum of all angles in a triangle = 180°

m∠A+ m∠B + m∠C = 180°

30° + 89° + m∠C = 180°

119° + m∠C = 180°

Subtract 119° from both sides, we get

m∠C = 61°

To find the length of AC:

Using sine formula:

$$\frac{b}{\sin B } =\frac{c}{\sin C}$

Substitute the given values in the formula.

$$\frac{b}{\sin 89^\circ } =\frac{14}{\sin 61^\circ }$

Multiply by sin 89° on both sides.

$$\sin 89^\circ \times \frac{b}{\sin 89^\circ } =\frac{14}{\sin 61^\circ } \times \sin 89^\circ$

$$b=\frac{14}{0.8746 } \times0.9998$

$b=16$

The length of AC is 16 km.

4 0

2 years ago

Please Quickly

Dima020 [189]

X=1.5 let me know if u need an explanation

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2 years ago

The price of Got Data stock dropped by $6 per share last month. Data Tech decreased by $10 per share, and Compute This decreased

sergiy2304 [10]

Answer: it's B. I just did..... Brainless plz

Step-by-step explanation:

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2 years ago

Andy can maintain a speed of 15 miles per hour on his bicycle. How long will it take him to finish a 60-mile bicycle race? *

ycow [4]

4 hours 60/15 = 4. :)

6 0

2 years ago

Read 2 more answers

Graph the equation using the point and the slopey-2=1/5(x-1)

cricket20 [7]

point-slope form of a line:

$y-y_1=m(x-x_1)$

where m is the slope and (x1, y1) is a point on the line.

In the case of:

$y-2=\frac{1}{5}(x-1)$

the slope is 1/5 and the point is (1, 2)

With this information, we can deduce that the point (1+5, 2+1) = (6, 3) is on the line. Connecting these two points we can graph the line as follows:

4 0

1 year ago