Mathematics College

Please help me I don’t understand

Please Help Me I Dont Understand

Answers

Answer 1

Answer:

x = 25

Step-by-step explanation:

By tangent of properties, we can get that triangle DBA is congruent to triangle DCA,

Thus, we come to the conclusion that 2x + 3 = 53

x = 25

Related Questions

(Fractions) Rewrite the expression using fithteenths. 2/5 - 1/3 =
_ / _ - _ / _
Fill in the blanks (fractions)

Answers

Answer:

1/15

Step-by-step explanation:

2/5-1/3=6/15-5/15=1/15

20. The top layer of a circular wedding cake has a
diameter is 15 inches. The bottom layer of the circular
wedding cake has radius is 30 inches. How many times
greater is the circumference of the bottom layer than
the top layer?

Answers

Answer:

4 times

Explanation:

tc = 15×π = 47.12.. in

bc = 2×30×π = 188.49.. in

bc = 188.5/47.12 = 4 times

Evaluate the expression 2a + 3b + 6 when a=2 and b=4

Answers

Answer:

22 or 4+12+6

Step-by-step explanation:

Since A is equal to 2, times 2 by 2 and get 4

Since B= 4 you times 3 by 4 and get 12

4+12 is 16

16 plus 6 is 22

what is the answer to this 4 - 1 3/4​

Answers

2.25 because 4-1 3/4 equals 2 1/4 and it simpler to convert to decimal

the answers is 9/4

simplified its 2 1/4 in mixed number form

decimal is 2.25

What is the resulting cross section if the cheesecake was sliced parallel to its points?

Answers

Answer:

Rectangle

Step-by-step explanation:

PLS HELP ME OUT WITH THIS
Student A: 78, 99, 80, 85, 95, 79, 85, 96
Student B: 100, 80, 79, 75, 92, 93, 75, 78, 84

Student A Mean:

Student A Mean Absolute Deviation:

Student B Mean:

Student B Mean Absolute Deviation:

Answers

Answer:

Student A Mean: 697/8=87.125

Student A Mean Absolute Deviation: 7.1563

Student B Mean: 756/9=84

Student B Mean Absolute Deviation: 7.3333

Yoo wsg whats he units please tell meeee

Answers

Answer:

wsp, answer is 5,5 i'm pretty sure

Step-by-step explanation:

or its 0.5

Help pls! show step by step

Answers

Answer:

He started with 37 CDs

Step-by-step explanation:

Variable: Let x be the number of CDs he got at the start

Equation: (x + 7) /2 = 22

x + 7 = 44

x = 37

Check: (37+7) /2 = 22

Find the exponential function that contains the points (2,36) and (3,108).

Answers

Answer:

[tex]f(x) = 4\times (3)^{x}[/tex].

Step-by-step explanation:

Exponential functions are in the form [tex]f(x) = a\, \left(b^{x}\right)[/tex],  where [tex]a[/tex] and [tex]b[/tex] are constants with [tex]b > 0[/tex].

In this question, the function should satisfy that [tex]f(2) = 36[/tex] and [tex]f(3) = 108[/tex]. Hence, constants [tex]a[/tex] and [tex]b[/tex] should ensure that:

[tex]a \cdot b^2 = f(2) = 36[/tex], and

[tex]a \cdot b^3 = 108[/tex].

Rewrite the left-hand side of the second equation: [tex]a \cdot b^{3} = a \cdot b^2 \cdot b[/tex].

Substitute the first equation [tex]a \cdot b^{2} = 36[/tex] into the second:

[tex]a \cdot b^2 \cdot b = 108[/tex].

[tex]36\, b = 108[/tex].

[tex]\displaystyle b = \frac{108}{36} = 3[/tex].

Substitute [tex]b = 3[/tex] into either equation (for example, the first equation) and solve for [tex]a[/tex]:

[tex]a \cdot 3^2 = 36[/tex].

[tex]a = 4[/tex].

Hence, the exponential function [tex]f(x) = a\cdot b^{x} = 4 \times (3)^{x}[/tex] should satisfy the requirements of this question.

2+3i / 1-4i simplify ​

Answers

Answer:

=2−i

Step-by-step explanation:

Hope this helps :)

BRAINLIEST PLSSS I HAVE A LITTLE BIT POINTS :|

-2 x -4 x -1 - -2 x -4

Answers

Answer:

-16

Step-by-step explanation:

(-2 * -4 * -1) - (-2 * -4) **use parenthesis to make easy

Multiply first parenthesis:

= -8

Multiply second parenthesis:

= 8

Combine (subtract):

-8 - 8 = -16

Answer:

-32

Step-by-step explanation:

your required answer is

-2 × -4 × 1 × -4 = -32

Help please I only have a few minutes left and I Lee’s to be fast super fast‼️❤️

Answers

Answer:

The discounted price is $109. So the bike now cost $218.

Step-by-step explanation:

what is the approximate simple interest earned on $2460 if it is invested at 5.25% for 3 1/2 years
A. $452
B. $387
C. $369
D. $129

Answers

Answer:

i think its c im not sure

Step-by-step explanation:

ANSWER:
i’m think the answer would be A. $452

Jeremiah answered 20
out of 25 questions
correctly on the math test.
What percent of the
questions did Jeremiah
answer correctly?

Answers

Answer:

he got 80 percent correct

Help me please which expression is equivalent to 2/3 x 5

Answers

Answer:

Your Answer Should Be C

Step-by-step explanation:

Because 2/3x5=10/3

And Then C, which is 2x5÷3= 10÷3 =10/3 :D

Answer:

2/3 x 5 = 10/3 in fraction form. 2/3 x 5 = 3.3333 in decimal form.

Step-by-step explanation:

C is the answer

an investment that you bought ____ and sold for ___ made a profit

A.400, 500

B.500,300

C.500, 400

D.400, 300​

Answers

A. 400, 500
The question mentions you make a profit, which is to make more money than what you spent or put in. All other choices would make the statement say you ended up having less money, which is money lost, not profit.

I WILL GIVE BRAINERLEST AND LIKE AND 5 STARS


For what number of days d will the
total charges for an overdue library
book be $2.40?

Answers

Answer:

You seem to have not posted the whole problem

You did not seem to say the problem

But mabye 30

I need help the answer is not C . please show some type of explanation.

Answers

Answer:

its a

Step-by-step explanation:

yea

It’s a btw but I’m yea

3^16 as a power of 1/9

Answers

Answer:

x = -9

Step-by-step explanation:

3^16 = (1/9)^x

9^18 = 9^-x

On comparing co-efficients :

-x = 9

x = -9

Quadrilateral A'B'C'D' Is the image of quadrilateral ABCD under a dilation.

What is the scale factor of the dilation?

Answers

Answer:

Scale factor = [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

Formula for the dilation to be used,

Scale factor = [tex]\frac{\text{Dimension of the image}}{\text{Dimension of the original}}[/tex]

                    = [tex]\frac{A'B'}{AB}[/tex]

                    = [tex]\frac{1}{4}[/tex]

Therefore, scale factor by which quadrilateral ABCD has been dilated to form image quadrilateral A'B'C'D' is [tex]\frac{1}{4}[/tex].

what do i multiply by to get 187? 187 is the total

Answers

Answer:

11x17

Step-by-step explanation:

The numbers that multiply to give 187 are 11 and 17.

What is multiplication?Multiplication is one of the four basic arithmetic operations, alongside addition, subtraction, and division.In math, multiply means the repeated addition of groups of equal sizes.

Given is to multiply two numbers to give 187.

The numbers that multiply to give 187 are -

11 x 17

11 x (10 + 7)

(11 x 10) + (11 x 7)

110 + 77

187

Therefore, numbers that multiply to give 187 are 11 and 17.

To solve more questions on multiplication, visit the link below -

https://brainly.com/question/620034

#SPJ2

i need help plsss help

Answers

Answer:

d

Step-by-step explanation:

/

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Determine whether the figure has line point and or rotational symmetry

Answers

Answer:

D) rotational and point

Step-by-step explanation:

D) rotational and point

231+X=? HELLLLLLLLLLLLLLLLLLLL!!!!!!!!

Answers

Answer:

231+X = 231+X

Step-by-step explanation:

Hope it helps!!!!!!!!

-1/3*12+14=2/3*12+2=

Answers

Answer:

10=10

Step-by-step explanation:

_1(12)+14=2(12)+2

3.

which pair of triangles is congruent by asa?​

Answers

I believe it would be D.
D; look up “ASA” for clarification

there are 640 students in one school. How many boys are there if it is known that 1/4 of the number of girls is equal to one sixth of the number of boys?

Answers

Answer:

960

Step-by-step explanation:

You have to figure out what 1/4th of 640 is, which is 160.

It says that number is 1/6th of boys, so you multiply by the inverse.

160x6 = 960

well since all of the girls = 4/6ths of the boys that would mean 24/24girls=16/24boys  

16/24 is 66.666666666667% of 24/24

66.666666666667% of 640 is426.666666667 but in my head i would round up so:

Approximately

427 boys and 213 girls.

Vertical angles are equal in measure.
always
sometimes
O never

Answers

Answer:

Always

Step-by-step explanation:

Thank you have a great day

Which of the following represents the total surface area?

O 844 in.²
O 548 in.²
O 296 in.²
O 210 in.²​

Answers

Answer:

Step-by-step explanation:

It is the 2nd one.

2nd one. makes more scence

Answer:

844 in.²

Step-by-step explanation:

Find the area of all the sides, and add them up

(20 x 7.4) x 2 = 296

(20 x 10) x 2 = 400

(10 x 7.4) x 2 = 148

296 + 400 + 148 = 844 in.²

ANSWER FAST PLEASE!!

Answers

Answer:

D

Step-by-step explanation:

D is a function because it passes the vertical line test, meaning that you can draw a vertical line anywhere through the graph and it will only it the lines one time.

Answer:

D u welcome

Step-by-step explanation:

I'm cant say step by step

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