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Nezavi [6.7K]
3 years ago
9

What is the simplified value of the expression below? Negative 2.6 + 5.8

Mathematics
2 answers:
Katen [24]3 years ago
5 0
8.4 )::::: I think sorry
dlinn [17]3 years ago
3 0

Answer:

3.2

Step-by-step explanation:

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a rectangle swimming pool is 9 meters wide with a surface area of 3 square meters. what is the length of the pool?
yarga [219]
L*w=A
l*9=3
(l*9)/9=3/9
l=1/3 of a meter.
7 0
3 years ago
-2+y=9 3x-7y=3 solve the system by the substitution
kherson [118]

Hello from MrBillDoesMath!

Answer:

x = 80/3 ( 26 2/3)

y = 11


Discussion:

Step 1:

-2 + y = 9  =>                         add 2 to both sides

2 +  -2 + y = 9  +2 =>

y = 11

Step 2:

Substitute y = 11 (from Step 1) into

3x - 7y = 3  =>

3x - 7(11) = 3 =>               y = 11 from Step 1

3x - 77 = 3 =>                   add 77 to both sides

3x - 77 + 77 = 3 + 77 =>

3x = 80 =>

x = 80/3


Thank you,

MrB

3 0
3 years ago
The height of adult males on a given South Pacific Island is approximately normally distributed with mean 65 inches and standard
zvonat [6]

Answer:

a) 0.59871

b) 0.22663

e) 0.95994

Step-by-step explanation:

The height of adult males on a given South Pacific Island is approximately normally distributed with mean 65 inches and standard deviation of 4 inches.

We solve using z score

z = (x-μ)/σ, where

x is the raw score

μ is the population mean = 65 inches

σ is the population standard deviation = 4 inches

a). Taller than 64 inches

This means x > 64

Hence,

64 - 65/4

=- 1/4 = -0.25

P-value from Z-Table:

P(x<64) = 0.40129

P(x>64) = 1 - P(x<64) = 0.59871

b.) shorter than 62 inches

Hence,

62 - 65/4

=- 3/4 =- 0.75

P-value from Z-Table:

P(x<62) = 0.22663

c.) between 64 inches and 68 inches

Hence,

for 64 inches

64 - 65/4

=- 1/4 = -0.25

P-value from Z-Table:

P(x = 64) = 0.40129

For 68 inches

Hence,

68 - 65/4

= 3/4= 0.75

P-value from Z-Table:

P(x = 68) = 0.77337

d.) between 58 and 68 inches

e.) taller than 58 inches

Hence,

58 - 65/4

= -6/4 = -1.5

P-value from Z-Table:

P(x<58) = 0.040059

P(x>58) = 1 - P(x<58) = 0.95994

7 0
3 years ago
A line passes through (4, 5) and (8, 9). Which equation best represents the line?
Alborosie

Answer:

A) y=x+1

Step-by-step explanation:

y-y1=m(x-x1)

m=(y2-y1)/(x2-x1)

m=(9-5)/(8-4)=4/4=1

y-5=1(x-4)

y-5=x-4

y=x-4+5

y=x+1

5 0
4 years ago
Read 2 more answers
Marisa decided to raise the price of her earrings so that she will make a profit of $5.00 on each pair. She has
Varvara68 [4.7K]

Marisa, who raise the price of her earrings so that she will make a profit of $5.00 on each pair, expect to make a profit with her company.

<h3>What is the unit price?</h3>

The unit price is the amount of money required to buy one unit of a item or goods.

To find the unit price, divide the total cost of the goods to the total number of goods.

The cost of repair will now be $60. Thus, the total cost of 50 earrings is,

C=60\times50\\C=3000

Marisa decided to raise the price of her earrings so that she will make a profit of $5.00 on each pair. Thus, the new selling price of her earring is,

P=60+5\\P=65

The sale's price of 50 earrings is,

P=50\times65\\P=3250

She has also improved the quality control so that only 1 pair in 50 need to be returned for repair. Thus, the cost price of one earring has to be removed from the sales price of 50 earrings as,

P=3250-60\\P=3190

The profit made by her company on 50 earrings is

p=P-C\\p=3190-3000\\p=190

Thus, Marisa, who raise the price of her earrings so that she will make a profit of $5.00 on each pair, expect to make a profit with her company.

Learn more about the unit price here;

brainly.com/question/25879801

#SPJ1

8 0
2 years ago
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