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Likurg_2 [28]
3 years ago
6

I WILL GIVE BRAINLIEST Evaluate 3 + (-h) + (-4) where h = -7

Mathematics
1 answer:
Alexandra [31]3 years ago
3 0

Answer:

3+7-4=6

Step-by-step explanation:

replace the h with -7.

3+ [-(-7)]+(-4)

simplify. two negatives make a positive, causing the [-(-7)] to simply become 7.

the +(-4) simplifies to -4.

so...

3+7-4

from here its really really easy, just simple add and subtract.

3+7=10

10-4=6

If it helped, id really appreciate brainliest :)

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The 15th term of an arithmetic series is
RSB [31]

Answer:

-1557

Step-by-step explanation:

a+14d=143

a+12d=183

--------------------

2d= -40

d= -20

a=183+240=423

a(100th)= 423+99*-20=423-1980= -1557

I hope that help =)

7 0
2 years ago
Calculate the missing angle and give a reason for your answer
larisa86 [58]
Here’s the proof:

The triangle is an Isosceles Triangle. An Isosceles Triangle is a type of triangle that has 2 congruent sides. There is a Theorem called The Isosceles Triangle Theorem, in which states that if a triangle has 2 congruent sides, then it is an Isosceles Triangle, and the angles oppositely the congruent sides will be congruent. Therefore, we know that the triangle is Isosceles because it has 2 congruent sides, so the angles opposite those sides are congruent. We first need to find the angle measures.

1.) Finding the angle measures using the Triangle Sum Theorem. The Triangle Sum Theorem states that all 3 angles in a triangle must sum up to 180°. So, we can create an Algebraic equation to solve and figure out what the angle measures are of the two angles at the bottom of the triangle because they are opposite to the congruent sides.
Equation:
26+2x=180. We know that one angle measure is 26°, and we know the other 2 are angles are congruent, so we will call them X, and there are two of them, so we call them 2x.
26-26+2x=180-26
2x=154
2x/2=154/2
x=77.
Therefore, the angles measure 77°. To check that we can just plug them back into our equation:
26+2(77)=180.
180=180.
The angle measures are correct.

2.) Since we know the angle measures of the triangle, we can use the Alternate Exterior Angles Theorem, which states: if a transversal is intersected by two parallel lines, then the alternating exterior angles are congruent. We can see in the picture that the lane with the triangle on top and trapezoid at the bottom is a transversal (transversal=line intersected by two parallel lines). We can also see that the two lines with arrows are parallel because they are marked parallel with arrows. Therefore, we have a transversal intersected by two parallel lines, so the angles outside the parallel lines and and opposite each other are congruent.

We know that the two angles at the base of the triangle are 77°. The left base angle in the triangle is outside the parallel lines, so angle n or n° must also be 77° because they are both outside the parallel lines (exterior) and alternating from each other.

Therefore, n°=77°
8 0
2 years ago
The Franzes are purchasing a home for $195,000, and they are using a conventional loan. What is the best estimate for what their
Vesna [10]
The answer is B. I think
7 0
3 years ago
ALGEBRA ONE PLEASE HELP HIGH REWARD CLICK HERE HELP PLEASE IM OFFERING 100 POINTS
Sedbober [7]

The equation shows that the number of toys that must be bought for them to have equal profit will be 212 toys.

<h3>How to calculate the value?</h3>

From the information, it should be noted that the equation that can be used to represent the information about Jaclyn company will be:

= 2125 + (49.99 × x)

= 2125 + 49.99x

The equation that can be used to represent the information about Richie company will be:

= (39.95 × x)

= 39.95x

Therefore, we will equate both equations:

2125 + 49.99x = 39.95x

49.99x - 39.95x =2125

10.04x = 2125

x = 212

Therefore, the number of toys that must be bought for them to have equal profit will be 212 toys.

Learn more about equations on:

brainly.com/question/2972832

#SPJ1

5 0
1 year ago
Find the perimeter of the polygon
katen-ka-za [31]

Answer:

11x - 2

Step-by-step explanation:

7x-6 + (3x+4) + (x)

11x -2

6 0
2 years ago
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