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2 years ago

Please need help it’s due today

Mathematics

1 answer:

jeka942 years ago

8 0

Answer:

B. David's sprinkler uses less water per minute.

Step-by-step explanation:

David's sprinkler uses 10 gallons every 5 minutes, which is 2 gallons a minute.

George's sprinkler uses 6 gallons a minute, which means it uses more.

David's sprinkler uses less and it uses exactly 2 gallons a minute.

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What do you call to the set of ordered pairs

satela [25.4K]

Answer:

A relation is a set of ordered pairs. The set of all first components of the ordered pairs is called the domain of the relation and the set of all second components of the ordered pairs is called the range of the relation.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Help me please i need the correct answer

BaLLatris [955]

Answer:

First one is 25/2

Step-by-step explanation:

12×2+1=25/2

9×4+1=36/4

cross multiply and you get

100/

divide both by 2 and you get 50/4 then you divide both by 2 again and you get 25/2 because you can't reduce it anymore

7 0

1 year ago

Which of the following is not a rate?

IrinaK [193]

Answer:

Folding 6 loads

Step-by-step explanation:

5 0

2 years ago

The staff dietician at the California Institute of Trigonometry has to make up a meal with 600 calories, 20 grams of protein, an

Arlecino [84]

Answer:

The amount of rubbery jello=5.038 ounce

Dried fish stick = 4.886 ounce

Mystery meat = 1.526 ounce.

Step-by-step explanation:

Solutions/Explanation: (a) Suppose the amount of rubbery jello = $x$ ounce,

The dried fish sticks amount to be = $y$ ounce

The amount of mystery meat = ounce.

Specification of the ingredients

Rubbery jello has: Calories=10 Cal/ounce, Protien=1 gram/ounce, Vitamin C= 30 mg/ounce

Dried fish sticks: Calories=50 Cal/ounce, Protien=3 grams/ounce, Vitamin C=10 mg/ounce

Mystery meat: Calories=200 Cal/ounce, Protien=0.2 gram/ounce, Vitamin C=0 mg/ounce,

Now,

Total calories = $600$ .

Thus,

$10x+50y+200z=600\quad\Idot (1)$

The, total Protien = $20 g$ .

Thus,

$x+3y+0.2z=20 \quad\Idot (2)$

also, total Vitamin C = .

Thus,

$30x+10y+0z=200 \quad\Idot (3)$

Therefore,

1, 2 and 3 are the mathematical models of the dietician's problem with a system of three linear equations.

(b) Now, we know three equations:

$10x+50y+200z=600$

$x+5y+20=60 \quad\Idot (4)$

From eqn 2,

$x+3y+0.2z=20 \quad\Idot (5)$

From eqn 3.

$30x+10y=200$

$3x+y=20 \quad\Idot (6)$

On solving the eqn 4, 5 and 6 for $x, y$ and $z,$

Multiplying eqn 5 by 100,

$100x+300y+20z=2000 \quad\Idot (7)$

Now, subtract eqn 4 from eqn 7

$99x+295y=1940 \quad\Idot (8)$

Now, multiplying eqn 6 by 295. we have,

$885x+295y=5900 \quad\Idot (9)$

Now, subtract, eqn 8 from eqn 9, we get,

$786x=3960$

$x=\frac{3960}{786}$

$x=5.038 \quad\Idot (10)$

Now, substituting into eqn 6, we get

$y=4.886 \quad\Idot (11)$

Now, substitute eqn 10 and 11 into eqn 4, we have

$z=1.526$

4 0

2 years ago

Please help me and show all your work because I need to know how can you do it

abruzzese [7]

Table C is the correct values of the relationship.

Solution:

To find which table of values shows the relationship between the number of cakes the baker makes and the number of bags of flour uses:

Table A: Ratio of cakes baked to bags of flour used

$\frac{9}{4}$ , $\frac{18}{6}=\frac{3}{1}$ and $\frac{27}{9}=\frac{3}{1}$

Here the ratios are not same.

So, this table is not true.

Table B: Ratio of cakes baked to bags of flour used

$\frac{6}{2}=\frac{3}{1}$ , $\frac{12}{4}=\frac{3}{1}$ and $\frac{18}{6}=\frac{3}{1}$

Here the ratios are same.

So, this table is true.

Table C: Ratio of cakes baked to bags of flour used

$\frac{4}{9}$ , $\frac{6}{18}=\frac{1}{3}$ and $\frac{9}{17}$

Here the ratios are not same.

So, this table is not true.

Table D: In this table cakes baked is 6 and the bags of flour is 18.

But a baker made 18 cakes using 6 bags of flour.

So, this table is not true.

Hence table C is the correct values of relationship.

4 0

2 years ago