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3 years ago

What are the terms in the expression 7x + 4y + 1?

Mathematics

2 answers:

Sphinxa [80]3 years ago

7 0

There are 3 terms : 7x , 4y, and 1.
a term is separated by any math symbol
examples are =, +, *

dem82 [27]3 years ago

6 0

Answer:

Terms are 7x, 4y, 1

Step-by-step explanation:

We define the term algebraic as an algebraic expression that has been reduced and where there is no addition or subtraction between the variables.

Algebraic terms are characterized as product expressions of coefficient (s) by the variable (s) or literal part.

Algebraic terms are represented by the following parts: coefficients, variables, exponents and the literal part.

However, there are terms that may not have any part, such as the literal.

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Please help quickly thanks :)

marusya05 [52]

(0, 0) → t = 0, w = 0 → w = 0 · 0

(1, 4) → t = 1, w = 4 → w = 1 · 4

(2, 8) → t = 2, w = 8 → w = 2 · 4

(3, 12) → t = 3, w = 12 → w = 3 · 4

<h3>Answer: w = 4t</h3>

8 0

2 years ago

1. Compare 2.01 x 1015 and 2.8 x 1013. Which number is larger?

Leya [2.2K]

Answer:

If these are in exponent form -- the answer would be 2.01 x $10^{15}$ > 2.8 x 10.3

Step-by-step explanation:

Look at the sheet attached.

6 0

3 years ago

The sandwich shop offers combo meals with a choice of one sandwich, one side, and one drink. On total there are 560 combos avail

Leto [7]

There are 7 sides available.

The fundamental counting principal tells us to find the total number of combinations of independent items, multiply the number of choices from each one (choices x choices x....)

This means that drink x sides x sandwiches = 560. We know there are 16 sandwiches and 5 drinks. Let S be the number of sides:
15(6)(S) = 560
80S = 560

Divide both sides by 80:
80S = 560/80
S = 7

6 0

3 years ago

The probability of flu symptoms for a person not receiving any treatment is 0.038. In a clinical trial of a common drug used to

alexgriva [62]

Answer:

36.32% probability that at least 47 people experience flu symptoms. This is not an unlikely event, so this suggests that flu symptoms are not an adverse reaction to the drug.

Step-by-step explanation:

I am going to use the normal approximation to the binomial to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

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.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .

In this problem, we have that:

$n = 1164, p = 0.038$

$\mu = E(X) = np = 1164*0.038 = 44.232$

$\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = 6.5231$

Estimate the probability that at least 47 people experience flu symptoms.

Using continuity correction, this is $P(X \geq 47 - 0.5) = P(X \geq 46.5)$ , which is 1 subtracted by the pvalue of Z when X = 46.5.

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

$Z = \frac{46.5 - 44.232}{6.5231}$

$Z = 0.35$

$Z = 0.35$ has a 0.6368

1 - 0.6368 = 0.3632

36.32% probability that at least 47 people experience flu symptoms. This is not an unlikely event, so this suggests that flu symptoms are not an adverse reaction to the drug.

6 0

2 years ago

PLEASE HELP ME<br> Use the function below to find f(2).<br><br> f(x) = 1/3 x 4^x

Anna71 [15]

f(2) This means that x is 2, so you plug in 2 for x in the equation

$f(x)=\frac{1}{3} (4^x)$