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madam [21]
4 years ago
10

Practice Problems

Mathematics
1 answer:
OverLord2011 [107]4 years ago
4 0

Answer:

1. slope is 7 and y-intercept is 9

2.slope is -5 and y-intercept is -2

3. slope is 3 and y-intercept is 1

Step-by-step explanation:

The standard equation of a line in slope form is;

y=mx + b where m is the slope and b is the y intercept.

In question 1.

y=7x + 9

slope is 7 and y-intercept is 9

In question 2

y= -5x - 2

slope is -5 and y-intercept is -2

In question 3

y= 3x + 1

slope is 3 and y-intercept is 1

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A scientist begins an experiment with a culture of 5 bacteria cells. Every hour, the number of bacteria cells triples. Which equ
Ann [662]

Answer:

y= 3(5)x

Step-by-step explanation:

5 0
3 years ago
Find the exact value of secθ if cscθ=-4/3 and the terminal side of θ lies in Quadrant III.
Anton [14]
Quadrant is III so, sign would be negative for Sec.
Now, we know, csc = H / P
So, H = 4, P = 3
Calculate for B, 
B² = H² - P²
B² = 4² - 3²
B² = 16 - 9
B = √7

We know, sec Ф = H / B = 4 / √7
We can write it as: -4√7 / 7  [ -ve sign for 3rd quadrant ]

In short, Your Answer would be Option B

Hope this helps!
6 0
4 years ago
In the diagram below, C is the midpoint of AB. If AC is 4 centimeters, what is
Strike441 [17]

Answer:

The answer is B. 4cm

Step-by-step explanation:

Since it is the midpoint AC is always going to be the same as CB if C is the midpoint.

:)

6 0
2 years ago
The figure shows a blueprint of a dining room, kitchen, and living room. Each square has a side length of 1/4 inch. Tile costs $
Anastaziya [24]

Answer:

The cost of the tile for the kitchen is $1,680

Step-by-step explanation:

step 1

we know that

The scale drawing is \frac{1}{16}\frac{in}{ft}

The dimensions of the kitchen in the blueprint are

L=3(1/4)=3/4 in

W=5(1/4)=5/4 in

step 2

Find the actual dimensions of the kitchen

Divide the dimensions of the kitchen in the blueprint by the scale drawing

L=(3/4)/(1/16)=12 ft

W=(5/4)/(1/16)=20 ft

The area is equal to

A=(12)(20)=240 ft²

step 3

Find the cost of the tile for the kitchen

7(240)=$1,680

3 0
3 years ago
Read 2 more answers
How many times larger is 9 × 10^7 than 3 × 10^6?<br><br> A. 30<br> B. 0.3<br> C. 300<br> D. 3
horrorfan [7]

Answer:

A.30

Step-by-step explanation:

9 × 10^7 = 90 000 000

3 × 10^6 = 3 000 000

90 000 000 / 3 000 000  = 30

3 0
3 years ago
Read 2 more answers
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