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3 years ago

Help plz i must get this correct I will make u a brainllest

Mathematics

1 answer:

KatRina [158]3 years ago

6 0

Answer:

Step-by-step explanation: d - angle c is congruent to z

because the angles that are oppostie are equal to each other.

Pls let me know if its correct.

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PLEASE HELP! 40 POINTS! state the value only do not use units. do not write x= in your response. Thank you

12345 [234]

Answer:

y=43 (alternate angle)

in triangle ADC

97+y+x=180(,sum of interior angle of triangle is 180)

x=180-97-43

x=40

8 0

3 years ago

Read 2 more answers

Joe opened a book store. On the first three days he sold 15, 18, and 16 books (he initially hoped he sell 17 books everyday). Ho

soldi70 [24.7K]

$\frac{15 + 18 + 16 + x}{4} = 17 \\ \frac{49 + x}{4} = 17 \\ 49 + x = 17 \times4 \\ 49 + x = 68 \\ x = 68 - 49 \\ x = 19$
hope this helps! ask if you have anymore questions

5 0

3 years ago

Segment RS has endpoints at R(5,-3) and S(5,13) , Point Q lies on RS such that RQ : QS = 3 : 1 . Which of the following must be

Liula [17]

Answer:

(3) Q(5,9)

Step-by-step explanation:

Let point Q has coordinates (x,y). Consider vectors $\overrightarrow{RQ}$ and $\overrightarrow{QS}.$ Note that

$\overrightarrow{RQ}=(x-5,y+3);$
$\overrightarrow{QS}=(5-x,13-y).$

Since $\dfrac{RQ}{QS}=\dfrac{3}{1},$ then

$\dfrac{\overrightarrow{RQ}}{\overrightarrow{QS}}=\dfrac{3}{1},$

Thus,

$\dfrac{x-5}{5-x}=\dfrac{3}{1}\Rightarrow x-5=3(5-x),\ x-5=15-3x,\ 4x=20,\ x=5.\\ \\\dfrac{y+3}{13-y}=\dfrac{3}{1}\Rightarrow y+3=3(13-y),\ y+3=39-3y,\ 4y=36,\ y=9.$

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4 years ago

a) six pens and five pencils cost $2.50 while three pens and two pencils cost $1.15 . what will be the cost of a pen and 4 penci

melisa1 [442]

Let pen's cost be x and pencil's cost be y.

6x + 5y = 2.50
3x + 2y = 1.15

Thus, 3x = 1.15 - 2y
Therefore, 6x = 2.30 - 4y

Substituting the value of 6x ;

(2.30 - 4y) + 5y = 2.50

or, 2.30 + y = 2.50

=> y = 0.20.

Substituting the value of y ;

6x = 2.30 - 4(0.20)
6x = 2.30 - 0.80 = 1.5
6x = 1.5
=> x = 0.25

Thus, 1 pen costs 0.25 $ and 1 pencil costs 0.20$.

Thus, cost of one pen is 0.25$.
Cost of 4 pencils is 0.80 $

0.25$ + 0.80$ = 1.05$

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3 years ago

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The point (2,1) is the turning point of y=x^2+ax+b where a and b are integers.Find the values of a and b

Umnica [9.8K]

In any parabola, the vertex is the turning point. And the x-coordinate of the vertex can be found using

$x_V=-\dfrac{b}{2a}$