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3 years ago

2) A number of adults visiting Zoo Negara is 70 to the nearest 10. The number of children attending

Mathematics

1 answer:

lora16 [44]3 years ago

8 0

Answer:

Puedes mandarma la foto

Step-by-step explanation:

Porfa

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A human heart beats an average of 80 beats per minute.How many beats is this in an hour?express your answer in scientific notati

nlexa [21]

Answer:

4,800

Step-by-step explanation:

Sorry I don't know how to explain it scientifically but I know how to do the calculations

1) Theres 60 minutes in an hour

2) 80x60= 4,800 beats

4 0

3 years ago

Increase 18 by a half

chubhunter [2.5K]

Answer:

Step-by-step explanation:

if we were decreasing it would be 9 but if we are increasing it, it would be 36

just multiply by 2 or divide by 2

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3 years ago

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WRITING LINE AR INEQUALITIES Nancy works at Love at First Bite bakery where she decorates cakes and cupcakes. It takes her an av

ozzi

Answer:

Step-by-step explanation:

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3 years ago

Aye plz help. Im abt to die. Find the perimiter of the shape below.

Law Incorporation [45]

Answer:

Step-by-step explanation:

Add all the sides together which is 40

4 0

3 years ago

A student solved 3/x−4=x/7 in six steps, as shown.

Stolb23 [73]

Answer:

Option A.

Step-by-step explanation:

The given equation is

$\dfrac{3}{x-4}=\dfrac{x}{7}$

Step 1: Multiply both sides by (x-4).

$3=\dfrac{x(x-4)}{7}$

Step 2: Multiply both sides by 7.

$21=x(x-4)$

Step 3: Using distributive property.

$21=x^2-4x$

Step 4: Isolate all terms on one side.

$0=x^2-4x-21$

Step 5: Find factors by splitting the middle term.

$0=x^2-7x+3x-21$

$0=x(x-7)+3(x-7)$

$0=(x-7)(x+3)$

Step 6: Using zero product property, we get

$x=-3, x=7$

It means student solved the equation correctly.

Therefore, the correct option is A.

5 0

4 years ago

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