2 years ago

F(1)=2, f(n)= f(n-1)+7 Plsss help

Mathematics

1 answer:

grigory [225]2 years ago

7 0

Answer:

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Use A(-1, -2) and B(8,0) to find the length of AB. Round your answer<br> to the nearest hundredth.

enyata [817]

9514 1404 393

Answer:

9.22

Step-by-step explanation:

The distance formula is ...

d = √((x2 -x1)^2 +(y2 -y1)^2)

Using the given coordinates, the distance between them is ...

d = √((8-(-1))^2 +(0 -(-2))^2) = √(9^2 +2^2) = √85 ≈ 9.22

The length of AB is about 9.22 units.

8 0

3 years ago

Solve this math problem. Correct answer gets brainliest.

gtnhenbr [62]

Answer:

$28.50

Step-by-step explanation:

21 ÷ 14 = 1.5

19 · 1.5 = 28.50

Hope this helps!!

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2 years ago

|25 POINTS| Suppose you have one pyramid with a base that is 10 meters long and 10 meters wide with a slant that is 15 meters. N

laiz [17]

Answer:

125 meters squared

Step-by-step explanation:

Surface area of initial pyramid:

A= 10²+4*1/2*10*15= 400 m²

Surface area of extended pyramid:

A= 10*15+2*1/2*15*15+2*1/2*10*15= 525 m²

The difference is:

525- 400= 125 m²

3 0

3 years ago

Identify the vertex, focus axis of symmetry, and directrix. Then sketch the graph

Paha777 [63]

Answer:

vertex = ( -6 , -3 )

focus = $(-\frac{97}{16} ,-3)$

axis of symmetry = y = -3

directrix = x = $-\frac{95}{16}$

GRAPH :

5 0

2 years ago

A circle has a radius of 7.5 centimeters and a central angle AOB that measures 90 degrees. What is the length of the intercepted

Julli [10]

Since there are $360^{\circ}$ in a circle, and central $\angle AOB = 90^{\circ}$ , you can see that the part "sliced out" by the central angle is $\frac{90^{\circ}}{360^{\circ}} = \frac{1}{4}$ of the whole circle.

This means that the length of the intercepted arc $\stackrel{\frown}{AB}$ is $\frac{1}{4}$ of the circumference of the circle. So,

$\stackrel{\frown}{AB} = \frac{1}{4}(2 \pi r) = \frac{1}{4}(2 \pi (7.5 cm)) = \bf \frac{15 \pi}{4} cm$

6 0

3 years ago