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2 years ago

Please help I will give brainliest

Mathematics

1 answer:

enot [183]2 years ago

8 0

Answer:

100°

Step-by-step explanation:

First, remember that flat angles are always 180°,

So the angle of B is 40° because they form that kind of angle.

Now, you can notice that both sides of the triangle have the same value.

That means the angle is the same too.

So, the third angle is also 40°

Last but not least the addition of all angles in a triangle is always 180°

With that in mind we just solve the next equation:

40° + 40° + a° = 180

a° = |80 - 80

a = 100°

And that is how we find the answer, hope it was helpful ;)

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Dr. Hoover, a pediatrician, has 3 annual checkups and 2 sick visits scheduled next Tuesday,

Jet001 [13]

Dr. Hoover allot his time on Tuesday for an annual checkup is 147 minutes and for a sick visit is 42 minutes (Total 189 minutes)

On Wednesday appointment, he allot his time for an annual checkup is 147 minutes and for a sick visit is 21 minutes (Total 168 minutes)

solution

Let us assume, minutes for annual checkup denoted as x and

minutes for sick visit denoted as y

The equation of Tuesday visit is $3x + 2y = 189 minutes ------ 1$

The equation of Wednesday visit is $3x + 1y = 168 minutes ------ 2$

by changing the signs of the equation 2 and subtract it from the equation 1 we will get 1y = 21 minutes

to substitute y =1 in the equation 2 we get

$3x + 2(21) = 189$

$3x + 42 = 189$

$3x = 189 - 42$

$3x = 147$

$x = 147 ÷ 3 = 49 minutes$

then now we have substitute both x = 49 and y= 21 in equation ----- 2

we will prove that $3x + 2y = 189 = 3 (49) + 2(21) = 189$ $147+ 42 = 189 minutes$

so the Tuesday appointment , the time allotted for an annual checkup is 147 minutes and for a sick visit is 42 minutes (Total 189 minutes)

On Wednesday appointment, the time allotted for an annual checkup is 147 minutes and for a sick visit is 21 minutes (Total 168 minutes)

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3 years ago

What are the steps for solving the attached problem?

Keith_Richards [23]

Answer:

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction

Step-by-step explanation:

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1 year ago

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A snail is moving along a path that is 4 meters long. The snail moves at an average rate of 3 3/10 inches per minute. Question 1

Troyanec [42]

Answer: The length of the path = 157 inches { approx}

Step-by-step explanation:

Given: The length of the path = 4 meters

1 meter = 100 centimeters

So 4 meters = 400 centimeters

Also 1 in. ≈ 2.54 cm

$\Rightarrow\ 1 cm = \dfrac{1}{2.54}\ in.$

Now, $\text{ 400 centimeters}=400\times\dfrac{1}{2.54}\text{ inches}$

$=157.480314961\approx 157 \ \ \ \ \ \text{ [Rounded to the nearest inch.]}$

Hence, the length of the path = 157 inches { approx}

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2 years ago

Ms. Lunette has 18 students in her class. She wants to send 3 of these students to pick up books for the class.

tigry1 [53]

The number of possible combinations is given by

... C(18, 3) = 18!/(3!(18-3)!) = 18·17·16/(3·2·1) = 816 . . . . possible combinations

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There are 18 ways to choose the first one; 17 ways to choose the second one, and 16 ways to choose the 3rd one. The same 3 students can be chosen in any of 3! = 6 different orders, so the product 18·17·16 must be divided by 6 to get the number of possible combinations in which order doesn't matter.

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3 years ago

A camera regularly priced at 295 was placed on sale at 236. What percent of the regular price was the sale price?

skad [1K]

Answer:

80%

Step-by-step explanation:

regular price was given as $295.

The sale of the camera was $236.

Needed Percentage of the regular price =( 236/295)

= 0.8

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3 years ago