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
irinina [24]
3 years ago
13

What is the value of this expression when d=3

Mathematics
1 answer:
Oksanka [162]3 years ago
4 0

Answer:9

Step-by-step explanation:

9

You might be interested in
A stack of 20 cards is numbered 1 through 20. One card is selected at random. What is the probability that the card is less than
kvasek [131]

Answer:

40%

Step-by-step explanation:

5 0
3 years ago
100 pts Sam purchased a new car for $17,930. The value of the car depreciated by 19% per year. When he trades the car in after x
erik [133]

Answer: 2500

Step-by-step explanation:

I don’t know if it’s right

4 0
2 years ago
How much fabric is needed to make a tent in the shape of a triangular prism with the following measures?
makvit [3.9K]

Answer:

The fabric needs 196.4 ft²

Step-by-step explanation:

∵ The tent formed formed from 4 faces

 two equilateral triangles with side length 7 ft

 two rectangles with dimensions 11 ft and 7 ft

∵ Area equilateral Δ = 1/4 S²√3

∵ Area rectangle = L × W

∴ The area of the prism = 2 × 1/4 × (7)²√3 + 2 × 7 × 11

                                       = 196.4 ft²

Note:

If you find the area of the triangle by the rule 1/2 × base × height

∴ Area Δ = 1/2 × (7) × 6 = 21 ft²

∴ Area tent = 2 × 21 + 2 × 77 = 196 ft²

Two answer very closed

5 1
3 years ago
Read 2 more answers
Please help, i have been doing this for a while and it is still wrong.
adelina 88 [10]

Answer:

51.7661748226 degrees; 38.2338251774 degrees

Step-by-step explanation:

First, draw a diagram to illustrate this situation. Looking at angle A, Eric's height, 1.65 m, corresponds to OPPOSITE, and Eric's shadow, 1.30 m, corresponds to ADJACENT. Using SOH CAH TOA, the equation is:

tan(A) = 1.65/1.30

A = arctan(1.65/1.30)

A = 51.7661748226 deg

Looking at angle B, 1.65 m is ADJACENT and 1.30 m is OPPOSITE. Therefore, the equation is:

tan(B) = 1.30/1.65

B = arctan(1.30/1.65)

B = 38.2338251774 deg

3 0
2 years ago
Help me please please
snow_lady [41]

Answer:

Step-by-step explanation:

Number 2 first:

See the graph below for a hint. (Do you know how to use Desmos ?)

factoring seems to make no sense for y =-x^{2} +2x +4  but "guess and check" seems to work. I tried 4 for x, but that proved false. 3 for x made sense. You get -3x^{2} +2(3) +4 =y  so -9 +6 +4 = 1 is true.  So (3,1)

x+y=4 becomes 3 + 1 = 4  Also true

According to the graph, (0,4) would also be a solution, so (3,1) and (0,4)

Part 1:

Factor x^{2} +4x +3  as (x + 3)(x + 1) set each equal to 0 and get

x = -3 and x = -1  so the solutions seem be (-3,0) and (-1,0)

y = 2x + 6  factors to 2(x +3)

(-1,0) doesn't work!

But Desmos shows something else as a solution set for both:

(1,8)

y=2x+6 substitute values 8=2(1) +6  8=2+6 True

y = x^{2} +4x +3. Substitute values  8 =1^{2} +4(1) +3  8= 1+4+3 True

7 0
3 years ago
Other questions:
  • The solution of a+b>−4 is a>−9. What is the value of b?
    7·1 answer
  • Solve for b. 3(b−4)+5b=44 Enter your answer in the box.
    8·2 answers
  • Please help with this q
    15·1 answer
  • what is the measure of an angle, if three subtracted from twice the supplement and the result is 297 degrees?
    9·1 answer
  • A family of 6 is visiting a mall. The mall has 10 exit doors. Assume random selection. Find the probability that
    6·1 answer
  • Bella is going to redecorate her room using wallpaper. Her wall has a large window in the middle. The diagram below shows the wa
    12·1 answer
  • Mike and his 3 friends were eating pizza. They had 2 pizzas that they were going to
    7·1 answer
  • Can yall actually help <br> I need jus 3 and 6
    8·1 answer
  • A gardener is planting two types of trees: Type A is 4 feet tall and grows at a rate of 24 inches per year. Type B is 5 feet tal
    7·1 answer
  • 1-74. Read this lesson's Math Notes box about scaling axes. Then, on your paper, copy the incomplete
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!