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Bingel [31]
3 years ago
13

Find the value of x show steps

Mathematics
1 answer:
I am Lyosha [343]3 years ago
6 0

since they are vertical angles, they are equal

128 = 2x

divide by 2

64 = x


Answer x = 64

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Tamara bought yarn for $39 and 2 pairs of knitting needles. Her total cost for the yarn and knitting needles was $69. Tamara wri
Sati [7]
If you see the below statements among the choices, then you can select these as the answers:
a.) 39 + 2k = 69
             2k = 69 - 39
          2k/2 = 30/2
               k = 15

b.) 39 + 2k = 69
 39 + 2(15) = 69
     39 + 30 = 69
             69 = 69
7 0
3 years ago
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One side of a triangular garden is x feet long. The other two sides of the garden are both 5 feet less than twice the length of
Gnoma [55]
A:  If the 1st side of the garden is x feet long then the other sides are 2x - 5.  The perimeter is simply the measure of the distance around the triangle, so the length of all three sides added up.  So the equation to find the perimeter (p) would be...

p = x + (2x+5) + (2x+5)
or
p = x + 2(2x+5)

This is actually an equation so the expression to represent perimeter would simply be...

x + 2(2x+5)

B:  Since we know the equation for the perimeter and we know that we have 40 feet of fencing, then the equation to find the left over fencing would just be the length of fencing minus the perimeter...

40 - x + 2(2x+5) = the leftover amount of fencing

so the expression is...

40 - x + 2(2x+5)


3 0
3 years ago
If f(x) = 7x + 4 and g(x) = x + 4, what is<br> (fog)(-3)?
PolarNik [594]

Answer:

(fog)(-3)= 11

Step-by-step explanation:

we have from statement:

f(x) = 7x + 4

g(x) = x + 4

so we have:

(fog)(x)= 7(x+4) + 4

(fog)(-3)= 7(-3+4) + 4

(fog)(-3)= 7(1) + 4

(fog)(-3)= 11

7 0
4 years ago
A suit is on sale for 33% off the sale price is 536 what is the regular price
nataly862011 [7]

Answer: sale: 536

discount: 33%

33/100*536=

Step-by-step explanation:

1- I assume the cost of the suit is $536, not 536%.

So the % of the part times $536= Original price

Remember, $536 is 77% of the original price.

536x0.77=$696.10

Since the suit was 33% off, and since the sale price of the suit was $536

Then the suit was sold for 67% of its original price

Therefore, 67% of its original price (p) equals $536, or .67(p) = 536

.67p = 536

p = 536 � .67 = $800

Original price of suit was $800

4 0
3 years ago
Read 2 more answers
Find the x-coordinates where f ' (x)=0 for f(x)=2x+sin(4x) in the interval [0, pi]
MAVERICK [17]

Answer:

The x-coordinate is \dfrac{\pi}{6}[/tex].

Step-by-step explanation:

We are given a function f(x) as:

f(x)=2x+\sin (4x)

Now on differentiating both side with respect to x we get that:

f'(x)=2+4 \cos (4x)

When f'(x)=0

this means that 2+4\cos (4x)=0\\\\4\cos (4x)=-2\\\\\cos(4x)=\dfrac{-1}{2}

Hence, cosine function takes the negative value in second and third quadrant but we have to only find the value in the interval [0,\pi].

also we know that \cos (\dfrac{2\pi}{3})=\dfrac{-1}{2}----(1) (which lie in the second quadrant)

so on comparing our equation with equation (1) we obtain:

4x=\dfrac{2\pi}{3}\\\\x=\dfrac{\pi}{6}

Hence, the x-coordinates where f'(x)=0 for f(x)=2x+\sin(4x) is \dfrac{\pi}{6}.

5 0
3 years ago
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