Need help with this please and please explain as well thank you

Answer:

first angle be 30°

second angle be 70°

third angle be 80°

Step-by-step explanation:

first angle be x

second angle be y

third angle be z

x+y+z=180

given, y+z = 5x; z=5x-y

also, z=y+10

5x-y = y+10

5x= 10+y+y = 10+2y

x= (10+2y)/5

x+y+z=180

(10+2y)/5 + y + y+10 = 180

(10+2y)/5 = 180 -2y -10

(10+2y)/5 = 170-2y

multiply both sides by 5

10+2y = 5(170-2y)

10+2y= 850-10y

2y+10y = 850-10

12y= 840

y= 840/12 = 70°

z=y+10 =70+10= 80°

5x= (10+2y) = 10+2(70) = 10+140= 150

x = 150/5 = 30°

Answer:

4/5

Step-by-step explanation:

Answer:

8ft

Step-by-step explanation:

Use similarity and congruence

AB/ED=AC/EF

3/6=4/X

CROSS MULTIPLICATION

3X=6*4

3X=24

X=8ft

Answer:

804

Step-by-step explanation:

multiply 402 by 2

12÷2=6

6=402miles

402×2=804

#gamer

Answer:

Abraham Lincoln was 56 years old when he died.

Step-by-step explanation:

Answer:

the answer is 2616

hope this helped

Step-by-step explanation:

Answer:

9h + 1

Step-by-step explanation:

36h + 4 divided by 4 is 9h + 1

Answer:

ajjvtjeiqwchiedgvgfeggyryftyyyug ytugttbghg

4 2/3 think of how many time you can put 3 into 14 the section out the rest

Answer:

4 2/3

Step-by-step explanation:

the millers travled 4 2/3

Given:

Endpoint of segment AB are A(0,2), B(2,3).

Segment AB is dilated from the origin to create segment A prime B prime at A' (0, 4) and B' (4, 6).

To find:

The scale factor of dilation.

Solution:

If a figure is dilated about the origin with factor k, then

[tex](x,y)\to (kx,ky)[/tex]

Using this rule, we get

[tex]A(0,2)\to A'(k(0),k(2))[/tex]

[tex]A(0,2)\to A'(0,2k)[/tex]

So, the image of A is A'(0,2k).

It is given that image of A is A'(0,4). So,

[tex]A'(0,2k)=A'(0,4)[/tex]

On comparing the y-coordinates from both sides, we get

[tex]2k=4[/tex]

[tex]k=\dfrac{4}{2}[/tex]

[tex]k=2[/tex]

Therefore, the scale factor is 2 and the correct option is B.

Dilation involves changing the size of a line

The scale factor is 2.

From the graph, the coordinates of AB are:

[tex]\mathbf{A = (0,2)}[/tex]

[tex]\mathbf{B = (2,3)}[/tex]

The coordinates of AB are:

[tex]\mathbf{A' = (0,4)}[/tex]

[tex]\mathbf{B' = (4,6)}[/tex]

Divide A' by A or B' by B to calculate the scale ratio (k)

[tex]\mathbf{k = \frac{A'}{A}}[/tex]

So, we have:

[tex]\mathbf{k = \frac{(0,4)}{(0,2)}}[/tex]

Expand

[tex]\mathbf{k = \frac{2(0,2)}{(0,2)}}\\[/tex]

Divide

[tex]\mathbf{k = 2}\\\\\\\\[/tex]

Hence, the scale factor is 2.

Read more about scale factors at:

https://brainly.com/question/16713785

Answer:

26 miles.

Step-by-step explanation:

To solve this problem, the Pythagorean theorem must be applied, which states that the hypotenuse squared of every right triangle is equal to the sum of its squared legs, that is, A^2 + B^2 = C^2 .

Therefore, applying this formula, to determine the distance in a straight line from the starting point to the driving end point, the following calculation must be performed:

24^2 + 10^2 = X^2

576 + 100 = X^2

√676 = X

26 = X

Thus, the distance between the two points is 26 miles.

Answer:

[tex]x = 2 \\ y = 3[/tex]

[tex] - 5x + y = - 7.......(1) \\ - 3x - 2y = - 12......(2) \\ from \: (1) \\ y = - 7 + 5x \\ substitute \: in \: (2) \\ - 3x - 2( - 7 + 5x) = - 12 \\ - 3x + 14 - 10x = - 12 \\ [/tex]

[tex] - 13x = - 26 \\ x = \frac{ 26}{13} \\ x = 2[/tex]

[tex]y = - 7 + 5x \\ = - 7 + 5 \times 2 \\ = - 7 + 10 \\ y= 3[/tex]

Answer:

m < 4 = 120

Step-by-step explanation:

When two anlges are supplementary, their angle measures add up to 180, apply this knowledge here;

m<3 + m<4 = 180

60 + m<4 = 180

m<4 = 120

Answer:

120

Step-by-step explanation:

m<3 is 60 and 180-60=120

Answer:

B. x = 62 because 147 – 85 = 62 and 85 + 62 = 147

Step-by-step explanation:

We are given that

[tex]\angle ABC=85^{\circ}[/tex]

Exterior angle=[tex]147^{\circ}[/tex]

We have to find the value of x.

We know that

Exterior angle=Sum of opposite interior angles of triangle

Using the property

[tex]x+85=147[/tex]

Subtract 85 from both sides we get

[tex]x=147-85[/tex]

[tex]x=62[/tex]

Option B is true.

B. x = 62 because 147 – 85 = 62 and 85 + 62 = 147

Answer:

c) Percentages

Step-by-step explanation:

Percentages can be used to compare changes from one period to another.

In calculating a percentage change, either a percentage increase or percentage decrease, we must have both the new and old measurement of the specific quantity.

For example, let's find percentage increase of the number of students that joined a book club using the parameters below;

Original number of students = 32

New number of students = 36

We will calculate the increase using;

[tex] Increase = original \; number - new \; number [/tex]

Substituting the values, we have;

Increase = 36 - 32 = 4

[tex] Percentage \; increase = \frac{increase}{original \; number} * 100[/tex]

[tex] Percentage \; increase = \frac{4}{32} * 100[/tex]

[tex] Percentage \; increase = 0.125 * 100[/tex]

Percentage increase = 12.5%

Therefore, the number of students in the school club increased by 12.5%.

Answer:

[tex]\frac{112}{3}[/tex]

Step-by-step explanation:

14 ÷ 3/8 = 14 • 8/3

= 112/3

Answer:

37 1/3

Step-by-step explanation:

use Keep Change Flip when dividing with fractions! :) It's helpful

for example: 14 ÷ 3/8

14 (keep as 14)

* (change to multiplication)

8/3 (flip the fraction)

14 times 8/3= 37 1/3

Answer:

145%.

Step-by-step explanation:

Given that the price of an item yesterday was $120, and today, the price rose to $294, in order to find the percentage increase, the following calculation has to be made:

120 = 100

294 = X

((294 x 100) / 120) = X

29,400 / 120  = X

245 = X

245 - 100 = 145

Therefore, the percentage increase of the product was of 145%.

Answer:

-7x³ - ⅑x - 1

Step-by-step explanation:

A polynomial written in standard form would be written in such a way that the term with the highest degree comes first, followed by the second highest and so on, then what comes last is the constant.

Given the polynomial -7x³ - 1 - ⅑x, -7x³ with the highest degree comes first, followed by -⅑x, and then the constant, -1, comes last.

Thus, we would have:

✅-7x³ - ⅑x - 1

The person above is correct give them brainliest

Answer:

15n

Step-by-step explanation:

Since it is 15 samples per day, you just need to multiple 15 by the number of days.

9514 1404 393

Answer:

  18 miles

Step-by-step explanation:

The map distance and ground distance are proportional.

  (distance to school)/(3 in) = (12 miles)/(2 in)

Multiplying by 3 in gives ...

  distance to school = (12 miles)(3/2) = 18 miles

Answer:

80

Step-by-step explanation:

Answer: 24

Step-by-step explanation:

144-24=120

64-24=40

40*3=120 three times smaller

Answer:

The mean and standard deviation of the sampling distribution for the 36 students will be:

Mean = 18.6

Standard deviation = 6

Step-by-step explanation:

The mean and standard deviation of the sampling distribution is equal to the population mean and standard deviation respectively.  The only difference is that the population mean and standard deviation are parameters or fixed values calculated from every individual in the population, while the sample mean and standard deviation are statistics.  Statistics are calculated from only some of the individuals in a population.  They are meant to represent or approximate the population parameters.

Answer:

34% of 480=34/100×480=163.2

3 1/2 of 480=7/2×480=1680

Answer:

D.) Domain: 0≤x≤16

The domain represents the set of all possible inputs - the times when depth was measured

Step-by-step explanation:

Domain of a function is the possible set of inputs which are usually plotted on the x-axis, while range are corresponding outputs plotted on the y-axis.

In this case, the domain is the set of all possible inputs (x-values), which represents the times the depth was measured.

Domain ranges from 0 to 16. Thus:

Domain: 0 ≤ x ≤ 16