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Rudiy27
3 years ago
9

Can i please get help on 46,66,68 and 74

Mathematics
1 answer:
bixtya [17]3 years ago
5 0

Answer:

46: 12.5

66: 18

68: 5

74: 7

Step-by-step explanation:

46: 12.5 - 4.5 = 8

66: 15 + 18 = 33

68: 5 - 4 = 1

74: 7 - 5.5 = 2.5

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Can anyone help me solve 23, 24?
zimovet [89]

Answer:

Problem 23) y=3x+6

Problem 24) y=-\frac{1}{3}x-5

Step-by-step explanation:

step 1

Find the slope of the given line

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

we have

A(0,2)\ B(3,1)

Substitute the values

m=\frac{1-2}{3-0}

m=-\frac{1}{3}

step 2

Problem 23

we know that

If two lines are perpendicular then the product of its slopes is equal to minus 1

so

m1*m2=-1

Find the slope of the line

we have

m1=-\frac{1}{3}

substitute in the equation and solve for m2

(-\frac{1}{3})*m2=-1

m2=3

with the slope m2 and the point (0,6) find the equation of the line

Remember that

The equation of the line in slope intercept form is equal to

y=mx+b

we have

m=3

b=6 -----> the given point is the y-intercept

substitute

y=3x+6

step 3

Problem 24

we know that

If two lines are parallel, then its slopes are the same

so

with the slope m1 and the point (0,-5) find the equation of the line

The equation of the line in slope intercept form is equal to

y=mx+b

we have

m=-\frac{1}{3}

b=-5 -----> the given point is the y-intercept

substitute

y=-\frac{1}{3}x-5

8 0
4 years ago
A triangle has a base of 15 and an area of 165. What is the height of the triangle?
Ivahew [28]

Answer:

h = 22 units

Step-by-step explanation:

area = 1/2bh

165 = 1/2(15)h

15h = 330

h = 22 units

6 0
3 years ago
Read 2 more answers
Solve for x. Round to the nearest tenth of a degree, if necessary
Fynjy0 [20]

Step-by-step explanation:

here's the answer to your question

8 0
3 years ago
Work out the circumference amd area of tne circular peice of glass needed for the top of a display cabinet
GarryVolchara [31]

Answer:

The area of a circle with radius 0.2865 is 0.2579

Step-by-step explanation:

Area of a circle in terms of radius:

Area = π·r2 = 3.14·0.292 = 0.26 square meters(*)

Area of a circle in terms of diameter:

Area = π·(d2)2 = 3.14·(0.572)2 = 3.14·(0.29)2 = 0.26 square meters(*)

Area of a circle in terms of circumference:

Area = C2

4π

= 1.82

4π

= 3.24

(4·3.14)

= 3.24

12.56

= 0.26 square meters(*)

8 0
2 years ago
Write the answer in scientific notation and in standard form.Round to the appropriate number of significant digits.
Aleks [24]

Hey there, the answer is C.

After multiplying, you will get .37278. However, it's asking you to consider the significant figure of 3 so you'll have to round it to .373. C has that only option

7 0
3 years ago
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