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3 years ago

Helpppppppppppppppppp

Mathematics

1 answer:

Inessa05 [86]3 years ago

3 0

The number on top of sigma is the number of terms.

The answer is C. 8 terms.

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A company is having business cards printed. The cost to design the business card is $20. There is an additional cost of $0.05 pe

alekssr [168]

Answer:

It would be D,

Step-by-step explanation:

D. Use your equation to determine the total cost of 600 business cards.

3 0

3 years ago

Is b. 840,000 or am I wrong? Correct gets BRAINLIEST! :)

bazaltina [42]

Answer: y=4,728,779,608,739,020,800

Step-by-step explanation: based on the values you have for m & b it would be...

y=4,200 x $2^{50}$

y=4,200 x 1,125,899,906,842,624

y=4,728,779,608,739,020,800

7 0

3 years ago

Hugh sold 4 cars during a 5 hour shift, and later sold 12 cars sold during a 15 hour shift.

valentina_108 [34]

Answer:

Yes they are proportional because he is selling cars at the same rate

Step-by-step explanation:

7 0

3 years ago

Find the lengths of the sides of the triangle PQR. P(2, −3, −4), Q(8, 0, 2), R(11, −6, −4) |PQ| = Incorrect: Your answer is inco

Aloiza [94]

Answer:

the length PQ is 9 units,the length QR is 9 units,the length PR is 9.48 units,the triangle is not a right triangle,this is a isosceles triangle

Step-by-step explanation:

Hello, I think I can help you with this

If you know two points, the distance between then its given by:

$P1(x_{1},y_{1},z_{1} ) \\P2(x_{2},y_{2},z_{2})\\\\d=\sqrt{(x_{2}-x_{1} )^{2} +(y_{2}-y_{1} )^{2}+(z_{2}-z_{1} )^{2} }$

Step 1

use the formula to find the length PQ

Let

P1=P=P(2, −3, −4)

P2=Q=Q(8, 0, 2)

$d=\sqrt{(8-2)^{2} +(0-(-3))^{2}+(2-(-4))^{2}} \\ d=\sqrt{(6)^{2} +(3)^{2}+(6 )^{2}}} \\d=\sqrt{36+9+36}\\d=\sqrt{81} \\d=9\\$

the length PQ is 9 units

Step 2

use the formula to find the length QR

Let

P1=Q=Q(8, 0, 2)

P2=R= R(11, −6, −4)

$d=\sqrt{(11-8)^{2} +(6-0))^{2}+(-4-2 )^{2}} \\\\\\d=\sqrt{(3)^{2} +(6)^{2}+(-6 )^{2}}} \\d=\sqrt{9+36+36}\\d=\sqrt{81} \\d=9\\$

the length QR is 9 units

Step 3

use the formula to find the length PR

Let

P1=P(2, −3, −4)

P2=R= R(11, −6, −4)

$d=\sqrt{(11-2)^{2} +(-6-(-3)))^{2}+(-4-4 )^{2}} \\\\\\d=\sqrt{(9)^{2} +(-6+3)^{2}+(-4-(-4) )^{2}}} \\d=\sqrt{81+9+0}\\d=\sqrt{90} \\d=9.48\\$

the length PR is 9.48 units

Step 4

is it a right triangle?

you can check this by using:

$side^{2} +side^{2}=hypotenuse ^{2}$

Let

side 1=side 2= 9

hypotenuse = 9.48

Put the values into the equation

$9^{2} +9^{2} =9.48^{2}\\ 81+81=90\\162=90,false$

Hence, the triangle is not a right triangle

Step 5

is it an isosceles triangle?

In geometry, an isosceles triangle is a type of triangle that has two sides of equal length.

Now side PQ=QR, so this is a isosceles triangle

Have a great day

3 0

3 years ago

Evaluate the expression when x=10, y=−2, and z=−5. −x2+6z/y=

goldfiish [28.3K]

- (10)2 + 6(-5)/(-2)

- 20 + -30/-2

- 20 + 16

4 ( I think)

8 0

4 years ago