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3 years ago

7.2 x 12 x 0.23 = ? Round to the nearest hundredth.

2 answers:

6 0

7.2*12*0.23 = 19.872
To round to the nearest hundredth look at the '7' because it is in the hundredths column.
Now look at the number AFTER 7, it is a 2 which means you would leave it the same.
Which means your answer would be:

A. 19.87

But IF the number after 7 was, let's say 5, you would round it up so the number would become 19.88

Nat2105 [25]3 years ago

5 0

Hey You!

7.2 × 12 × 0.23 = 19.872

Your answer is A. 19.87

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The graphs of two linear equations ax + by = c and bx - ay = c, where a, b, c are all not equal to zero.

marin [14]

Let us find the slopes of the two lines

ax+by=c, slope m1 = -a/b

bx-ay=c, slope m2 = b/a

m1*m2 = (-a/b)(b/a) = -1

Therefore the two lines are perpendicular so the answer is D

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3 years ago

Which two consecutive whole numbers does StartRoot 39 EndRoot lie between? Why?

Arlecino [84]

. The answer is 21.

Step-by-step explanation:

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3 years ago

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Kai spent 90% of his money on a laptop that cost $423. Does he have enough money left to buy a scanner.explain

GarryVolchara [31]

Okay, so:

You would want to find what 1/10 of the laptop costs. That would be the 10% of money left in Kai's account.

So,

423*.1

(you have to turn the percentage into a decimal; 10%= .10

423*.1= 42.3

So, Kai has 42.3 dollars left to buy a scanner. He only has 10% of his bank account left to spend on the scanner.

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7 0

3 years ago

Limit question: lim x-->pi ((e^sinx)-1)/(x-pi)

aleksandr82 [10.1K]

$\displaystyle\lim_{x\to\pi}\dfrac{e^{\sin x}-1}{x-\pi}$

Notice that if $f(x)=e^{\sin x}$ , then $f(\pi)=e^{\sin\pi}=e^0=1$ . Recall the definition of the derivative of a function $f(x)$ at a point $x=c$ :

$f'(c):=\displaystyle\lim_{x\to c}\frac{f(x)-f(c)}{x-c}$

So the value of this limit is exactly the value of the derivative of $f(x)=e^{\sin x}$ at $x=\pi$ .

You have

$f'(x)=\cos x\,e^{\sin x}\implies f'(\pi)=\cos\pi\,e^{\sin\pi}=-1$

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4 years ago

Angie and Becky each completed a separate proof to show that the measures of vertical angles AKG and HKB are equal. Who complete

BigorU [14]

Linear pair angles, which are angles that together form a straight line are

supplementary angles.

The one that completed the proof incorrectly is <u>Becky</u>.

Reasons:

The two column proof is presented as follows;

Statement ${}$ Reason

1. Segment GH intersects segment AB at K ${}$ 1. Given

2. m∠AKG + m∠HKB = 180° ${}$ 2.Definition of Supplementary Angles

m∠GKB + m∠HKB = 180°

3. m∠AKG + m∠HKB = m∠GKB + m∠HKB ${}$ 3. Substitution property

4. m∠AKG = m∠HKB ${}$ 4. Subtraction Property

The difference between Angie's Proof and Becky's Proof is in Statement 2.

Angie states that; m∠AKG + m∠HKB = 180° and m∠GKB + m∠HKB = 180° by definition of Supplementary Angles

Becky states that; m∠AKG + m∠HKB = 180° and m∠GKB + m∠HKB = 180° by Angle Addition Postulate

Becky's proof is incorrect because the measure of angles m∠AKG and

m∠HKB and m∠GKB and m∠HKB are not given, therefore, the use of the

reason of Angle Addition Postulate in statement 2. is incorrect.

Learn more here:

brainly.com/question/13204208

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3 years ago