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2 years ago

HELP!! LOOK AT THE PIC AND SOLVE IT. HELP WILL BE APPRECIATED

Mathematics

1 answer:

Mrrafil [7]2 years ago

4 0

Answer:

a. the difference in lengths of the two pieces of carpet is 1.1m

b. total length of the carpet put together is 8.1m

Step-by-step explanation:

⇒ One piece of carpet is 3.5m long (given)

⇒ Another piece of carpet is 4.6m long (given)

a. What is the difference in lengths of the two pieces of carpet?

⇒ difference means subtract

⇒ 4.6m - 3.5m = 1.1m

b. Simon lays the two pieces of carpet together, end to end, What is the total length of the carpet?

⇒ total length means addition

⇒ 4.6m + 3.5m = 8.1m

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Can anybody help me im super close to failing math

Lady bird [3.3K]

Answer:

Step-by-step explanation:

-3 1/8 - 2 1/2 is the same as -3 1/2 + -2 1/2

4 0

3 years ago

Renee is buying Halloween candy. She wants to buy candy bars and lollipops and spend no more than $28. Each candy bar costs $0.4

aivan3 [116]

The inequality that represents the possible combinations of candy bars and lollipops that he can buy is given by:

$0.45x + 0.25y \leq 28$

<h3>What is the inequality that models this situation?</h3>

The total price can be no more than $28, hence:

$T \leq 28$

Each candy bar costs $0.45 and each lollipop costs $0.25. x is the number of candy bars and y of lollipops. Hence, the total price is given by:

T = 0.45x + 0.25y.

Hence, the inequality that models the situation is:

$0.45x + 0.25y \leq 28$

More can be learned about inequalities at brainly.com/question/25235995

6 0

2 years ago

If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time ca

aleksandr82 [10.1K]

Answer:

(a)8.0mg

(b)36.87 hours

(c)-0.168

Step-by-step explanation:

The amount of Valium in that person's bloodstream at any time can be modeled with the exponential decay function $A ( t ) = 10 e^{ -0.0188 t$ (t in hours)

(a)After 12 Hours

$A ( 12) = 10 e^{ -0.0188*12}\\=7.98\\\approx 8.0 mg $(to the nearest tenth of a milligram)$

(b)If A(t)=5mg

Then:

$5= 10 e^{ -0.0188 t}\\$Divide both sides by 10\\0.5=e^{ -0.0188 t}\\$Take the natural logarithm of both sides\\ln (0.5)=-0.0188 t\\t=ln (0.5) \div (-0.0188)\\$t=36.87 hours (to two decimal places.)$

(c)

$A ( t ) = 10 e^{ -0.0188 t}\\A'(t)=10(-0.0188)e^{ -0.0188 t}\\A'(t)=-0.188e^{ -0.0188 t}\\$At 6 hours, the rate at which the amount of Valium is decaying therefore is:\\A'(6)=-0.188e^{ -0.0188*6}\\$=-0.168 ( to three decimal places)$