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dlinn [17]
4 years ago
15

Please help me with this

Mathematics
2 answers:
Mamont248 [21]4 years ago
7 0
Since ABC is equal to DCB, you can use the angles given in triangle ABC in triangle DCB. Since the sum of the angles in a triangle is 180, the equation would be this:
90+46+x=180 

Solve for x in that and you're good :)
Klio2033 [76]4 years ago
5 0
Use trig so the side with 4x-7 is also equal to 21sin(46)=15 so 4x-7=15.1. thus x=5.52 which is around 6
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What is the value of the expression when c=-5 and d=2 45 c+28d?
REY [17]

45c + 28d

45(-5) + 28(2)

-225 + 56

-169

Hope this helps! :)

7 0
4 years ago
If ( t+ 5)/(t - 5) = 10, what is the value of t ?A) 45 / 11B) 5C) 11/2D) 55/9
love history [14]

The value of t is (D) 55/9.

<h3>What is an equation?</h3>
  • An equation is a formula in mathematics that expresses the equality of two expressions by connecting them with the equals sign =.
  • The word equation and its cognates in other languages may have subtly different meanings; for example, in French, an équation is defined as containing one or more variables, whereas in English, an equation is any well-formed formula consisting of two expressions linked by an equals sign.

To find the value of t:

Given -

  • (t+5)/(t-5) = 10
  • t+5 = 10(t-5)
  • t+5 = 10t - 50
  • 10t - t = 5 + 55
  • 9t = 55
  • t = 55/9

Therefore, the value of t is (D) 55/9.

Know more about equations here:

brainly.com/question/2972832

#SPJ4

8 0
2 years ago
2 - (-8) + (-3) =<br> O A) 12<br> OB) 7<br> O C<br> C) 14<br><br> OD 1
horrorfan [7]

Answer:

B)7

Step-by-step explanation:

2-(-8)=10

10+(-3)=7

6 0
4 years ago
Simplify the difference quotient f ( x + h ) â f ( x ) h for the function f ( x ) = 6 x â x 2
ladessa [460]

Answer:

final answer is 6

Step-by-step explanation:

Given f(x)=6x-2

To find the difference quotient use formula

\frac{f(x+h)-f(x)}{h}

f(x)=6x-2

f(x+h)=6(x+h)-2=6x+6h-2

Now plug it in the formula

\frac{f(x+h)-f(x)}{h}

\frac{6x+6h-2-(6x-2)}{h}

\frac{6x+6h-2-6x+2)}{h}

\frac{6h}{h}

6

5 0
3 years ago
Without solving, identify whether each of the following equations has a unique solution, no solution, or infinitely many solutio
Aleksandr [31]

Answer:

yes it gas a unique solution

Step-by-step explanation:

8x+3=8x+7

6 0
3 years ago
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