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3 years ago

Help asap, btw there may be more in a little soo

Mathematics

2 answers:

ivolga24 [154]3 years ago

8 0

The expression can be written in the form an equation as x=-(7+3y)

Harrizon [31]3 years ago

3 0

Answer:

X=7-3y

is the equation formed here

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In preparing a certain ointment, a pharmacist used 28.35 g of zinc oxide instead of the 31.1 g called for. Calculate the percent

Vilka [71]

Answer: 9.70%

Step-by-step explanation:

The formula to find the percentage error is given by :-

$\%\text{ error}=\dfrac{|\text{Estimate-Actual}|}{\text{Actual}}\times100$

Given : Actual mass of zinc oxide used by pharmacist = 28.35 g

Estimated mass of zinc oxide used by pharmacist =31.1 g

Now, $\%\text{ error}=\dfrac{|31.1-28.35|}{28.35}\times100$

i.e. $\%\text{ error}=\dfrac{2.75}{28.35}\times100$

i.e. $\%\text{ error}=9.70017636684\approx9.70\%$

Hence, the percentage of error on the basis of the desired quantity.= 9.70%

5 0

4 years ago

A small grain silo is filled with wheat at the end of each season. If the silo is only half full, how many cubic meters of wheat

Nonamiya [84]

Answer:

Volume of wheat = 147.26 m³ (check the explanation)

Step-by-step explanation:

The question still lacks some details such as the size of the silo. We will go forward by assuming the size of the silo to aid our calculation. Silos are cylindrical storage structures that range from 3 - 27 m in diameter and 10 - 90 m in height. For the purpose of this question, let's assume that the size of the silo is 5 m (diameter) by 15 m (height).

Let's list out the parameters to be used:

diameter (D) = 5 m; r = D ÷ 2 ⇒ r = 5/2 = 2.5 m,

height (h) = 15 m

Volume of silo = πr²h = π * 2.5² * 15

V (silo) = <u>294.52</u> m³

The silo is half full ⇒ ½ * V

Volume of wheat stored is given by half of the silo volume, since the silo is half-full

V (wheat) = ½ * 298.52

V (wheat) = <u>147.26</u> m³

6 0

3 years ago

The cost of Phone Plan Q is $10 per month plus $0.14 per minute. Phone Plan R costs $7 per month plus $0.17 per minute. If Antho

exis [7]

Answer:

The correct answer would be B

Step-by-step explanation:

4 0

4 years ago

Please thank you so much yall

Leto [7]

19. There are 24 hours in a day and Maria travelled for 15 days so multiply the two:
24*15=360

So Maria travelled for 360 hours.

22a. False; 2,000 lbs = 1 Ton
22c. True; 48 oz = 3 lbs

4 0

3 years ago

Read 2 more answers

An automobile tire manufacturer collected the data in the table relating tire pressure X (in pounds per square inch) andmileage

kaheart [24]

Step 1

Graph the function using the values in the table

Step 2

Find the quadratic function that best fits the data set from the graph