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sergiy2304 [10]
3 years ago
7

Help me please 98 math

Mathematics
1 answer:
luda_lava [24]3 years ago
5 0

Answer:

the least common denominator would have to be 77

Step-by-step explanation:

because the product of 11 and 7 equals 77 but there is nothing less than that that can actually be a COMMON denominator

for example: 7 can be multiplied by numbers to get these out comes //

7,14,21,28,35,42,49,56,63,70,77 and 77 is the only one that 11 can actually equal to that is common with 7

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It refers to the number of times a number is being multiplied by itself ... Ex: two to the fourth power
4 would be the exponent
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The measure of an angle is 24°. What is the measure of its supplementary angle?
umka21 [38]

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156 degree

Step-by-step explanation:

supplementary angle add up to 180 degree

180 - 24

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8 0
2 years ago
Tony will run at most 31 miles this week. So far, he has run 20 miles. What are the possible numbers of additional miles he will
Misha Larkins [42]

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5 0
3 years ago
In a right triangle ABC, CD is an altitude, such that AD=BC. Find AC, if AB=3 cm, and CD= 2 cm.
konstantin123 [22]

Consider right triangle ΔABC with legs AC and BC and hypotenuse AB. Draw the altitude CD.

1. Theorem: The length of each leg of a right triangle is the geometric mean of the length of the hypotenuse and the length of the segment of the hypotenuse adjacent to that leg.

According to this theorem,

BC^2=BD\cdot AB.

Let BC=x cm, then AD=BC=x cm and BD=AB-AD=3-x cm. Then

x^2=(3-x)\cdot 3,\\ \\x^2=9-3x,\\ \\x^2+3x-9=0,\\ \\D=3^2-4\cdot (-9)=9+36=45,\\ \\\sqrt{D}=\sqrt{45}=3\sqrt{5},\\ \\x_1=\dfrac{-3-3\sqrt{5} }{2}0.

Take positive value x. You get

AD=BC=\dfrac{-3+3\sqrt{5} }{2}\ cm.

2. According to the previous theorem,

AC^2=AD\cdot AB.

Then

AC^2=\dfrac{-3+3\sqrt{5} }{2}\cdot 3=\dfrac{-9+9\sqrt{5} }{2},\\ \\AC=\sqrt{\dfrac{-9+9\sqrt{5} }{2}}\ cm.

Answer: AC=\sqrt{\dfrac{-9+9\sqrt{5} }{2}}\ cm.

This solution doesn't need CD=2 cm. Note that if AB=3cm and CD=2cm, then

CD^2=AD\cdot DB,\\ \\2^2=AD\cdot (3-AD),\\ \\AD^2-3AD+4=0,\\ \\D

This means that you cannot find solutions of this equation. Then CD≠2 cm.

8 0
3 years ago
Read 2 more answers
What is x/2.6=2? and explain why and how you got your answer .
Gnesinka [82]
Do the opposite of division which is multiplication. 2.6x2=5.2 
I hope I did it correctly and that it benefits you ^^
3 0
3 years ago
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