2 years ago

Need helpp fastt plss will give brainliest to who is correct plss helpp

Mathematics

1 answer:

ivann1987 [24]2 years ago

7 0

The answer is 221 I did the work

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Jordyn had an 8-ounce glass of water. She drank 4.7 ounces and poured another 3.5 ounces into her glass. Which expression repres

Maksim231197 [3]

6.8 oz would be the final answer but an expression could possibly be 8-4.7+3.5

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2 years ago

How many moles of oxygen are required to burn 3.0 mole of C10H8 (naphthalene)?

astra-53 [7]

Answer: 36 moles oxygen

Step-by-step explanation:

C10H8 + 12O2 ====》 10CO2 + 4H2O

From the equation of the reaction,

1 mole of napth requires 12 moles of O2

3 moles of napth would require x moles O2

X = (3 * 12) / 1

X = 36 moles of oxygen.

Therefore 3 moles of naphtalene (C10H8) would require 36 moles of oxygen

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2 years ago

Point Q is the center of dilation. Lines segment S U is dilated to form line segment S prime U prime. The length of Q S is 3 .2

tia_tia [17]

Answer:

Option C.

Step-by-step explanation:

It is given that the dilation rule is $D_{Q,2.5}$ . It means the center of dilatation is point Q and scale factor is 2.5.

Scale factor is the ratio of distance from center to the image of a point and distance from center to the corresponding point.

$\text{Scale factor}=\dfrac{QU'}{QU}$

It is given that QU=4 and scale factor = 2.5.

$2.5=\dfrac{QU'}{4}$

Multiply both sides by 4.

$2.5\times 4=QU'$

$10=QU'$

We know that

$UU'=QU'-QU$

$UU'=10-4$

$UU'=6$

The distance between U' and U is 6 units.

Therefore, the correct option is C.

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3 years ago

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Let f(x) = x^2 + 2x and g(x)= 3 – x. Find f(-3) + g(-3).

Ksenya-84 [330]

Answer:

g(x)=6 and f(x)=3 these are your answers for this equation

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2 years ago

When multiplying two negative numbers, what kind of number does one always get for an answer?

harina [27]

Answer:

a positive number

Step-by-step explanation:

-(-) = +

for example, -1 * -1 = 1

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3 years ago

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