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3 years ago

Label the place value 7,854.209

2 answers:

6 0

7(thousands)
8(hundreds)
5(tens)
4(ones)
.(decimal point)
2(tenths)
0(hundredths)
9(thousandths)
Hope this helps! I would appreciate it if I got brainliest! Thanks! =D

jolli1 [7]3 years ago

5 0

7 is in the thousands place, 8 is in the hundreds place, 5 is in the tens place, 4 is in the ones place, 2 is in the tenths place, 0 is in the hundredths and 9 is in the thousandths.

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Jada, Lin, and Elena are saving money for a trip. Together they saved $120. Jada saved $20 less than Lin. Lin saved 3 times as m

defon

Step-by-step explanation:

This is a word problem that we must translate to mathematical expression before we can solve.

let the individual saving be the first letters of the names

Jada= J

Lin= L

Elena= E

1. Jada saved $20 less than Lin

J=L-20

2. Lin saved 3 times as much money as Elena

L= 3E

3. Hence Elena saved

Together they saved $120.

hence

(L-20)+3E+E= 120

L-20+3E+E= 120

collecting like terms we hav

L+4E=120+20

L+4E= 140

but we know that L= 3E

3E+4E= 140

7E= 140

divide both sides by 7 we have

E= 140/7

E= $20

This means Elena saves $70

also L= 3E

L= 3*20

L= $60

this means that Lean saved $60

also J=L-20

J= 60-20

J= $40

This means that Jada saved $40

6 0

3 years ago

Prove algebraically what type of function this is (even, odd, or neither).<br> f(x) = x4 – x2

murzikaleks [220]

Answer:

that's an even function

Step-by-step explanation:

because the greatest degree is 4 and that is even number.

3 0

3 years ago

Find the area of a regular polygon

Law Incorporation [45]

Answer: Area of the polygon is 43.31 cm^2 t

Step-by-step explanation:

The polygon show in the diagram is a hexagon. It has six sides, since it is a regular hexagon, all the six sides are equal.

From the information given, the apotherm = 5√3

The apotherm is the perpendicular distance from the center of one side of the polygon to the center of the polygon. To determine the area of the polygon,

Area of polygon

=area = a^2n ×tan 180/n

Area = (5√3)^2 tan(180/6)

Area = 5^2×(√3)^2 × tan30

Area = 25×3×0.5774

Area = 43.305

Approximately 43.31 cm^2 to the nearest tenth

7 0

3 years ago

HELP ME PLEASSEE!!! ASAP!!!!!!!

bagirrra123 [75]

OK so basically, she’s at the pizza shop selling paintings, since she’s selling it at their venue, the owners may demand a small commission of a price. In this case that is 15% of $15. 15% of 15 is 2.25, meaning she only gets $12.75. Mindy would like to buy a pizza for $12, she has 12, but does she have enough to make the sales tax. 12×.05 is $0.6 dollars which means she has enough money to buy it.

7 0

3 years ago

Read 2 more answers

The body temperatures of adults are normally distributed with a mean of 98.6degrees° F and a standard deviation of 0.60degrees°

Schach [20]

Answer:

97.72% probability that their mean body temperature is greater than 98.4degrees° F.

Step-by-step explanation:

To solve this question, we have to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sample means with size n of at least 30 can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$