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Nitella [24]
2 years ago
7

PLEASE HELP!!! 40pts

Mathematics
2 answers:
skelet666 [1.2K]2 years ago
7 0

Answer: a

Step-by-step explanation:

I think

mote1985 [20]2 years ago
3 0

Answer:

i think a

Step-by-step explanation:

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Jamie says that if she knows only the measure of one angle in an isosceles triangle, she can always determine the measures of th
lozanna [386]

Answer:

Jamie is correct

Step-by-step explanation:

Jamie is correct.

Example: isosceles triangle ABC AB=AC

∠B = ∠C        ∠A + ∠B + ∠C = 180°

if ∠A = x     ∠B = ∠C = 1/2 * ( 180° - x)

if ∠B or ∠C = x            ∠A = 180° - 2x

6 0
3 years ago
Read 2 more answers
Find the value of r so that the line through (8,r) and (4,5) has a slope of -4
Ratling [72]

Answer:

r = - 11

Step-by-step explanation:

Calculate the slope m using the slope formula and equate to - 4

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (4, 5) and (x₂, y₂ ) = (8, r)

m = \frac{r-5}{8-4} = \frac{r-5}{4} = - 4 ( multiply both sides by 4 )

r - 5 = - 16 ( add 5 to both sides )

r = - 11

7 0
2 years ago
1. The most massive planet in the solar system, Jupiter, has a mass of about 1,898,000,000,000,000,000,000,000,000 kg. Estimate
UNO [17]

Answer:

D. 2*10^{27} kg

Step-by-step explanation:

Mass of Jupiter is given as 1,898,000,000,000,000,000,000,000,000 kg

Estimating this to the nearest whole number would be = 2,000,000,000,000,000,000,000,000,000 kg (rounding up the the "1,898")

To express this in scientific notation form, simply count how many zeros we have to the nearest whole number, 2.

We have 27 zeros there.

Therefore, we would multiply the whole number, 2, by 10 raise to the power of 27.

An estimate of the mass of Jupiter = 2*10^{27} kg

6 0
3 years ago
A lunch bill $12 before tax. If tax on the bill is 7.5%, what is the total cost of the lunch including tax?
Paladinen [302]

Answer:

$12.90

Step-by-step explanation:

To solve, multiply the cost before tax with tax, and then add the number gotten to the original amount.

12 x 7.5% = 12 x 0.075 = 0.9

12 + 0.9 = 12.9

$12.90 is your answer.

~

7 0
3 years ago
Read 2 more answers
The equation of the line that goes through the points ( − 3 , − 9 ) and ( − 6 , − 3 ) can be written in the form y = m x + b
ivolga24 [154]

Answer:

y=-2x-15

Step-by-step explanation:

y=mx+b.

m is the slope of the line. To find it we can do \frac{dy}{dx} which is the difference between the y-coordinates divided by the difference between the x-coordinates.

So: \frac{dy}{dx} =\frac{-9-(-3)}{-3-(-6)} =\frac{-6}{3} =-2. Now we have the slope, let's input a set of coordinates into the equation so that we can find the constant b.

-9=-2(-3)+b

b=-15 - Re-arranging to get b

Now re-write the equation as we have the constants.

y=-2x-15

8 0
3 years ago
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