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4 years ago

Need help with number 8

Mathematics

1 answer:

Evgen [1.6K]4 years ago

8 0

The slope-point formula of a line:

$y-y_1=m(x-x_1)$

We have:

$m=2,\ (-8,\ 1)\to x_1=-8,\ y_1=1$

Substitute:

$y-1=2(x-(-8))\\\\\boxed{y-1=2(x+8)}$

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Can someone help me solve this?

Sergio [31]

Answer:

m<c = 104°

m<d = 80°

Step-by-step explanation:

Recall: Opposite angles of a cyclic quadrilateral are supplementary. Therefore, their sum equals 180°. Thus:

m<c + 76° = 180°

m<c + 76° - 76° = 180° - 76° (subtraction property of equality)

m<c = 104°

m<d + 100° = 180°

m<d +100° - 100° = 180° - 100° (subtraction property of equality)

m<d = 80°

8 0

3 years ago

James used a substitution to solve this system of equations. Which equation could be a result of his first step? 2x+3y=12 y=x+1.

Blizzard [7]

Answer:

x = 1.5

y = 3

Step-by-step explanation:

to solve this system of equation using the substitution methods we say let

2x+3y=12................................... equation 1

y=x+1.5..................................... equation 2

substitute equation 2 into equation 1

2x+3y=12................................... equation 1

2x + 3( x + 1.5) = 12

2x + 3x + 4.5 = 12

5x + 4.5 = 12

collect the like terms

5x = 12 - 4.5

5x = 7.5

divide both sides by the coefficient of x which is 5

5x/5 = 7.5/5

x = 1.5

put x = 1.5 into equation 2

y=x+1.5..................................... equation 2

y = 1.5 + 1.5

y = 3

therefore the value of x = 1.5 and y = 3 respectively.

5 0

3 years ago

Matt buys 14 jars of paint. Each jar contains 300 milliliters of paint. How many liters of paint in all is there in the jars?

SpyIntel [72]

Answer:

4200 milliliters

hope this helped! <3

-bubb0

3 0

4 years ago

Read 2 more answers

Last week, the price of cherries at the corner deli was $4.99 per pound. This week, cherries at the same deli are on sale at a 1

sergij07 [2.7K]

Answer:

The price for 3.75 pounds of cherries is $17.775.

Step-by-step explanation:

The price las week was $ 4.99 and it got a discount of 15% for this week, this means that the price for this week is 100% of the one prior minus 15%, therefore it is 85% of the last price. We need to calculate the price per pound with this discount as shown below:

$\text{this week} = \text{last week}*\frac{95}{100}\\\\\text{this week} = 4.99*0.95 = 4.74 \text{ per pound}\\$

Since the price is $4.74 per pound and we want to buy 3.75 pounds, then the total amount we need to pay is:

$\text{total amount} = 3.75*4.74 = 17.775$

The price for 3.75 pounds of cherries is $17.775.

6 0

3 years ago

What is the probability that a data value in a normal distribution is between a z-score of -1.32 and a z-score of -0.3? round yo

elena55 [62]

Answer:

Step-by-step explanation:

Use the table of Z-score, considering it represnts the probability of data to the left of Z-value, the needed probability would be the subtraction of Z -0.3 to Z -1.32 value.

38.209% - 9.342% =29.867%

The neaerest answer is A

4 0

3 years ago