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2 years ago

Sugar expert last year was reduced by 20% from a total of 40000 tonnes. What was the previous years expert?

Mathematics

1 answer:

Readme [11.4K]2 years ago

6 0

Answer:

32000 tonnes

Step-by-step explanation:

Given there was a 20% reduction last year from a total of 40000 tonnes .

20% /100% x 40000

0.2 x 40000

8000tonnes

Therefore, previous year’s excerpt = 40000 - 8000

32000tonnes

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Please answer this question I give brainliest thank you! Number 16

lawyer [7]

Answer:

Step-by-step explanation:

The mean is found by adding all of the data set together and then dividing by the amount of individual pieces of data in the set.

(2+3+3+8) = 16

16/4=4

The answer is 4a.

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3 years ago

3 groups of students went to the burger barn for a study break and snack. the first group ordered 4 burgers, 5 fries, and 7 drin

lora16 [44]

Answer:

Cost of one burger, a = $3.35

Cost of one fries, b = $0.9

Cost of one drink, c = $1.1

Step-by-step explanation:

Let

a be cost of one burger

b be the cost of on fry

c be the cost of on drink

So for the 1st group, 4a+5b+7c = $25.60 -----------(1)

for the 2st group, 8a+5b+6c = $37.90 ----------(2)

for the3st group, 12a+10b+11c = $61.30 ----------(3)

Now solving (1) and (2)

That is (1) x 2 - (2) gives,

5b+8c = 13.80 ----------------------(4)

Now, (1) x 3 - (3), we get

5b+10c = 15.5 ---------------------(5)

Solving (4) and (5), we get

c = 1.1

Now putting c in equation (4), we get

b = 0.9

Now from (1), we get

4a+5b+7c = $25.60

4a+5(0.9)+7(1.1) = $25.60

a = 3.35

Cost of one burger, a = $3.35

Cost of one fries, b = $0.9

Cost of one drink, c = $1.1

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3 years ago

Question 1- explain how Sheldon immediately knew howard was incorrect?

Dmitrij [34]

Answer:

Part 1) In the procedure

Part 2) In the procedure

Step-by-step explanation:

Part 1) Observing the graph

The roots are x=-1/2 and x=4

Remember that, the roots are the x-values when the value of y is equal to zero (the x-intercepts)

That's why Sheldon immediately realizes Howard's solution is incorrect

Part 2) we have

$y=2x^{2}-7x-4$

The formula to solve a quadratic equation of the form $ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

equate the equation to zero

$2x^{2}-7x-4=0$

$a=2\\b=-7\\c=-4$

substitute

$x=\frac{-(-7)(+/-)\sqrt{-7^{2}-4(2)(-4)}} {2(2)}$

$x=\frac{7(+/-)\sqrt{49+32}} {4}$

Howard's error is in this step, is wrong with the sign of the number 7, is positive instead of negative

$x=\frac{7(+/-)\sqrt{81}}{4}$

$x=\frac{7(+/-)9}{4}$

$x=\frac{7(+)9}{4}=4$

$x=\frac{7(-)9}{4}=-1/2$

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3 years ago

In the equation Ax+By=C , if A is positive, and B and C are negative, which of the following are true? Select all that apply.

Naya [18.7K]

I believe that the answer is A and D

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3 years ago

What are FACTORS of a number?

kiruha [24]

factor, in mathematics, a number or algebraic expression that divides another number or expression evenly—i.e., with no remainder. For example, 3 and 6 are factors of 12 because 12 ÷ 3 = 4 exactly and 12 ÷ 6 = 2 exactly. The other factors of 12 are 1, 2, 4, and 12.

4 0

2 years ago

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Sugar expert last year was reduced by 20% from a total of 40000 tonnes. What was the previous years expert?​

Sugar expert last year was reduced by 20% from a total of 40000 tonnes. What was the previous years expert?