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timurjin [86]
3 years ago
7

Evaluate 5c-3d+115c−3d+115, c, minus, 3, d, plus, 11 when c=7c=7c, equals, 7 and d=8d=8d, equals, 8.

Mathematics
2 answers:
andrey2020 [161]3 years ago
6 0

Answer:

use substitution

(5 x 7) - (3 x 8) + 11= 35 - 24 + 11= 22

Anestetic [448]3 years ago
5 0

Answer:

Its 22 in simple words

Step-by-step explanation:

(5 x 7) - (3 x 8) + 11= 35 - 24 + 11= 22

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A tree is leaning at a 5° angle from vertical, making an 85° angle with the ground. When the sun is at a 65° angle of elevation,
Vinvika [58]
D = 25 ft is the length of a shadow. L -  the length of a tree.
Two angles are 85° and 65° and the third is 180° - ( 65° + 85° ) =
= 180° - 150° = 30°.
We will use the Sine Law:
25 / sin 30° = L / sin 65°
25 / 0.5 = L / 0.9063
25 * 0.9063 = 0.5 L
22.6577 = 0.5 L
L = 22.6577 : 0.5
L = 45.3 ft.
Answer: the approximate length of the tree is 45.3 ft.


3 0
3 years ago
Your friend claims that when a polynomial function has a leading coeffcient of 1 and the coefficients are all integers , every p
sammy [17]

Using the rational root theorem, it is found that your friend is correct.

<h3>What is the rational root theorem?</h3>
  • It is a theorem that states that for a polynomial with integer coefficients, with q being the factors of the leading coefficient and p being the factors of the constant, every <u>possible rational root</u> is the format \frac{p}{q}.

In this problem:

  • The leading coefficient is 1, hence it's only factor is q = 1, thus guaranteeing that every possible rational zero is an integer, which means that your friend is correct.

To learn more about the rational root theorem, you can take a look at brainly.com/question/10937559

8 0
3 years ago
DESPERATELY NEED HELP ON THIS QUESTION
Triss [41]
Angle aed has to be 80 since the two triangles share two of the same angles

5 0
3 years ago
3х + y = 13<br> 4x - 3y = 13<br><br> SOLVE using Elimination please show work !!
ipn [44]

Answer:

value of x= 4 and value of y =1.

8 0
3 years ago
Read 2 more answers
Help please!........ ​
labwork [276]

Answer:

circumference is 21.99 and area is 47 and 2/35 unit squared sorry if its a little late

5 0
4 years ago
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