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2 years ago

If QT = ST = 43 and m∠SRT = 42°, what is m∠QRS? m∠QRS =

Mathematics

1 answer:

Korvikt [17]2 years ago

5 0

Answer:

61 degrees

Step-by-step explanation:

m∡QRT=m∡SRT

5x – 9=2x + 33

3x=42

x=14

∡SRT=2x+33

∡SRT=2(14)+33

∡SRT=28+33

∡SRT = 61

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Help please it’s for a test I’m so clueless!!!!!!

kumpel [21]

Answer:

h=12 A=144 sq. cm.

Step-by-step explanation:

pythagoream therom:

9^2+h^2=15^2

81+h^2=225

h^2=225-81

h^2=144

Sq. rt h^2=sq. rt 144

h=12cm

1/2(b1+b2)h

1/2(5+19)12

1/2(24)12

1/2(288)

a=144

6 0

2 years ago

In a certain country, the car license plate formed by 4 numbers from the digits 1-9 followed by 3 letters from the alphabet. How

andriy [413]

Answer:

78,624,000 license plates

Step-by-step explanation:

For each of the 4 numbers, we have the following possibilities:

First number: 10 digits possible

Second number: 9 digits possible (one used)

Third number: 8 digits possible (two used)

Fourth number: 7 digits possible (three used)

For each of the 3 letters, we have the following possibilities:

First letter: 26 digits possible

Second letter: 25 digits possible (one used)

Third letter: 24 digits possible (two used)

The total number of license plates is the product of all these possibilities:

Number of plates = 10 * 9 * 8 * 7 * 26 * 25 * 24 = 78,624,000 license plates

7 0

3 years ago

You can buy 3 T-shirts for $24. Write a proportion that gives the cost c of buying 7 T-shirts.

kolbaska11 [484]

Answer: $56

Step-by-step explanation:

Divide 24 by 3 to get 8

$8 will be the amount it'll cost for 1 t-shirt

So you would multiply 7 by 8 to get 56

So $56 will be the amount of 7 t-shirts

7 0

3 years ago

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the

vovikov84 [41]

Answer:

Step-by-step explanation:

(3a2-b)(3a2+b) are the factor

6 0

3 years ago

The slope of the line below is 1.write the point-slope equation for the line using the coordinates of the labeled point.

Oliga [24]

Answer:

$y-4=(x-11)$ or $y=(x-11)+4$

Step-by-step explanation:

We know that the slope of the line is 1, so we can write it in terms of any two points belonging to the line, as per the difinition of slope:

$slope=\frac{y_1-y_0}{x_1-x_0} \\1=\frac{y_1-y_0}{x_1-x_0}$

We can use instead of $(x_1,y_1)$ any general point (x,y) on the line, and for $(x_0,y_0)$ the point we are interested in: (11,4)

That way the slope can be written as:

$1=\frac{y-4}{x-11}$

Next we can solve for y if this format is the one your instructor prefers:

$1=\frac{y-4}{x-11}\\1(x-11)=(y-4)\\(x-11)+4 =y$

5 0

3 years ago