1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Talja [164]
3 years ago
12

HELP!!!!!!!!!!!!!!!&$,÷*÷;÷

Mathematics
1 answer:
Pie3 years ago
8 0
1. TRUE - anything is symmetric about its axis of symmetry

2. FALSE - they open up or down, depending on the sign of "a"

3. TRUE - the x-coordinate of the vertex is -b/(2a). Its y-coordinate is f(x) at that point.

4. FALSE - for negative "a", the parabola opens downward.
You might be interested in
HELP PLEASE WILL GIVE BRAINLIST
rodikova [14]

Answer:

Let R be the greater radius and r be the smaller radius

A) Area of the sidewalk = R^2 - r^2   - This can be the expression

B)  = 3.14

=(R^2-r^2)

=(11^2-9^2)

=(121-81)

=*40

That was the simplified expression

Answer = 3.14 * 40 = 125.6m^2

Step-by-step explanation:

4 0
3 years ago
Solve the quadratic function using square root X+10x+25 =18
lawyer [7]

Answer:

= − 7 /1 1  in fraction form

Step-by-step explanation:

STEP 1: Multiply by 1

1 + 1 0 + 2 5 = 1 8

+ 1 0 + 2 5 = 1 8                                                                                                                               STEP 2: Combine like terms

+ 1 0 + 2 5 = 1 8

1 1 + 2 5 = 1 8                                                                                                                       STEP 3: Subtract  2 5   from both sides of the equation

11x+25=18

1 1 + 2 5 − 2 5 = 1 8 − 2 5

STEP 4: Simplify  by subtracting the numbers

1 1 + 2 5 − 2 5 = 1 8 − 2 5

11x+25−25=18−25                                                                                                   1 1 = 1 8 − 2 5                                                                                                                                   1 1 =  -7

STEP 5: Divide both sides of the equation by the same term                                                     1 1 = − 7                                                                                                                         11x/ 11x = −7/ 1 1 (set up as a fraction)                                                                       STEP 6: Cancel terms that are in both the numerator and denominator

=  − 7 /1 1                                                                                                                      SOLUTION

=  − 7 /1 1

5 0
3 years ago
Given ZW=20. Answer the questions please. ​
djyliett [7]

a) Corresponding angles of similar figures are congruent, so \angle B \cong \boxed{\angle Z}

b) Scale factor = (image)/(preimage). Since we are looking for ABCD to WZYX, this means that WZYX is the image and ABCD is the preimage. Thus, the scale factor is \frac{25}{10}=\boxed{5/2}

c) Since the scale factor is 5/2,

\frac{20}{t}=\frac{5}[2}\\\\40=5t\\ \\ t=\boxed{8}

8 0
2 years ago
Find thevmissing value. please
11Alexandr11 [23.1K]
Answers are
y=69°
x=104°
3 0
4 years ago
Use this figure to find the value of ∠FOD
mixer [17]
The answer is B
Since you know that BOD is a right angle add 12 And 15 and subtract your answer from 90

8 0
3 years ago
Other questions:
  • Help please this my little brother work
    5·2 answers
  • a rectangular deck has a area of 320 ft squared. the length of the desk is 4 feet longer than the width. find the dimensions of
    15·1 answer
  • Divide each polygon into triangles to find the sum of its angle measures
    9·1 answer
  • In a race, the second place finisher crossed the finish line 1 1/3 minutes after the winner. the third place finisher was 1 3/ m
    6·1 answer
  • A compact minivan costs $16,000 with a residual value of $1,000. It has an estimated useful life of five years. If the minivan w
    6·1 answer
  • Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles.
    5·2 answers
  • Find the Area. Simplify your answer.​
    8·1 answer
  • 4<br><img src="https://tex.z-dn.net/?f=4x%20-%203%20%3D%202x%20%2B%207%20find%20x%20" id="TexFormula1" title="4x - 3 = 2x + 7 fi
    11·1 answer
  • Y = 5x – 22<br> 3x + 2y = 34
    15·2 answers
  • Jamiah bought two 125 ounce bags of flour for baking. He used up 32 ounces of flour to bake a batch of brownies. How much flour
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!