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2 years ago

PLEASE I NEED HELP I HAVE NO IDEA WHAT THE ANSWERS ARE

Mathematics

1 answer:

Ivenika [448]2 years ago

4 0

Answer:

Sector AOB: 3.87

Sector BOC: 7.74

Sector COD: 5.16

Sector DOE: 3.01

Sector AOE: 11.19

Explanation:

Equation used: $S=\frac{r^2*a}{2}$

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You will begin with a relatively standard calculation. consider a concave spherical mirror with a radius of curvature equal to 6

vodomira [7]

We are given a concave spherical mirror with the following dimensions:

Radius = 60 cm; D o = 30 cm
Height = 6 cm; h o = 6 cm

First, we need to know the focal length, f, of the object (this should be given). Then we can use the following formulas for calculation:

Assume f = 10 cm

1/ f = 1 /d o + 1 / d i
1 / 10 = 1 / 30 + 1 / d i

d i = 15 cm

Then, calculate for h i:

h i / h o = - d i / d o

h i / 6 = - 15 / 30

h i = - 3 cm

Therefore, the distance of the object from the mirror is 3 centimeters. The negative sign means it is "inverted".

6 0

3 years ago

What is the area of Trapezoid EFGH?

Zina [86]

Answer:

30 m^2

Step-by-step explanation:

The area of a trapezoid is given by

A = 1/2 (b1 +b2 )h

where b1 and b2 are the lengths of the bases and h is the height

A = 1/2 ( 14 + 6) *3

=1/2 (20) 3

= 30 m^2

6 0

3 years ago

Read 2 more answers

(MARKING BRAINLIEST) For Alexandra's lemonade recipe, 8 lemons are required to make 4 cups of lemonade.

Amiraneli [1.4K]

Answer:

2 1

8 4

10 5

Step-by-step explanation:

We already know that it takes 8 lemons to make 4 cups of lemonade. So, to get the number of lemons needed to make 1 cup of lemonade, we divide the lemons and cups by 4.

8 divided by 4 = 2 and 4 divided by 4 = 1. Therefore, it takes 2 lemons to make 1 cup of lemonade.

By this logic, to figure how many cups are needed for 10 lemons, and since we know 2 lemons = 1 cup of lemonade, we multiply the lemons and cups by 5. 2 times 5 is 10 (lemons) and 1 times 5 is 5 (cups). Therefore, 10 lemons are needed to make 5 cups of lemonade.

To plot this on the coordinate axes, the first point goes (2,1) second being (8,4) and third point being (10,5).

side note - is this delta math? I feel your pain

8 0

3 years ago

I’ll give brainliest! Please it’s already missing

Lyrx [107]

<h2>Answer:-</h2>

$\pink{\bigstar}$ Amount of apple juice Will added $\large\leadsto\boxed{\tt\purple{1 \frac{5}{12}}}$

<h3>• Given:-</h3>

Will puts 1/4 cup of grape juice in a cup.
He added apple juice and then he had 1⅔ cup of juice in the cup.

How much apple juice Will added to the cup?

<h3>• Solution:-</h3>

➪ Amount of grape juice Will added = 1/4

➪ Amount of juice in total after adding the apple juice = 1⅔

Therefore, it is clear that the amount of apple juice Will added to the cup will be the difference in total amount of juice and amount of grape juice.

Hence,

➪ $\sf 1 \frac{2}{3} - \dfrac{1}{4}$