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Cloud [144]
3 years ago
12

What is the solution for the equation?

Mathematics
1 answer:
BARSIC [14]3 years ago
5 0

Answer:

a=-2

Step-by-step explanation:

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1. Scientific Notation and Percent. (Based on the ideas in Objective 1 and Objective 4.) 6 points
vlabodo [156]

Answer: 1.715*10^{12} skin cells were not burned.

Step-by-step explanation:

<h3><u> The complete exercise is: Two percent of Sennie's skin cells were burned when she escaped from a fire. If 3.5*10^{10} of her skin cells were burned then, how many skin cells were not burned?​</u></h3><h3 />

Let be "x" the number of Sennie's skin cells that were not burned when she escaped from the fire.

According the the data given in the exercise, you know that 2% represents 3.5*10^{10} of Sennie's skin cells that were burned. This means that the percent of her skin cells that were not burned is:

100\%-2\%=98\%

With this information you can write the following proportion:

\frac{3.5*10^{10}}{2}=\frac{x}{98}

Solving for "x", you get:

(98)(\frac{3.5*10^{10}}{2})=x\\\\x=171.5*10^{10}

To express the result in Scientific notation, the decimal point must be after the first digit; then you must  move the decimal point two places to the left:

x=1.715*10^{12}

7 0
4 years ago
A hockey goalie blocks 75% of shots at the goal. How many shots can the goalie predict she or he will block in 75 tries
inn [45]

Answer:

56

Step-by-step explanation:

75% of 75 tries = 0.75×75 = 56.25

Rounding, he can expect to block 56 shots.

7 0
3 years ago
a sector with a central angle measure of 175 degrees has a radius of 12 cm, what is the area of the sector
cupoosta [38]

Answer:

70pi

Step-by-step explanation:

7 0
3 years ago
Does anyone know the answer?
Mashcka [7]

The points C and D are 13.8173 meters apart.

Step-by-step explanation:

Step 1:

Assume the distance between points C and D is x. So the distance from B to D is (x + 24) m.

In the triangle, the given angle is 48°, the opposite side, AB's length is 42 meters. The adjacent side's length is (24 + x) meters. To determine the x's length, we determine the tan of the angle. To calculate the tan of an angle, we divide the opposite side's length by the adjacent side's length.

tan \theta = \frac{oppositeside}{adjacent side}.

Step 2:

The length of the opposite side = 42 meters.

The length of the adjacent side = (24 + x) meters.

tan \theta = \frac{oppositeside}{adjacent side}, tan 48 = \frac{42}{24+x}, tan 48 = 1.1106.

1.1106 (24+x) = 42, 26.6544 + 1.1106x = 42.

1.1106x = 42 - 26.6544 = 15.3456, x = \frac{15.3456}{1.1106} = 13.8173.

So the distance between C and D is 13.8173 meters.

4 0
3 years ago
Which underfined geometric term can be described as a one dimensional
satela [25.4K]

Hello from MrBillDoesMath!

Answer:

A point.



Thank you,

MrB

7 0
4 years ago
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