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Serjik [45]
3 years ago
15

How are percents and ratios different

Mathematics
1 answer:
Lyrx [107]3 years ago
6 0
UsesbsnajnsjJhjsbsbnsnnsjs
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The expression 8x + 2y
Digiron [165]
You can do 2(4x + 1y)
5 0
3 years ago
​claim: the mean pulse rate​ (in beats per​ minute) of adult males is equal to 6969 bpm. for a random sample of 125125 adult​ ma
RoseWind [281]

Answer:

t=0.21

Step-by-step explanation:

Given  \bar x=69.2, s=10.9, n=125and a population mean \mu=69.

#We state our hypothesis as:

H_o:\mu=69\\\\H_a:\mu\neq 69

The evidence available should validate either the null or alternative hypothesis.

#We calculate the test statistic as:

t=\frac{\bar x-\mu_}{s/\sqrt{n}}\\\\\\=\frac{69.2-69}{10.9/\sqrt{125}}\\\\\\=0.2051

\approx0.21

Hence, the test statistic is t=0.21

4 0
3 years ago
Solve the equation.<br> -3x +.1 + 10x = x + 4<br> N<br> olu<br> R<br> X =<br> 18
zheka24 [161]

Answer:

Hence after solving the given equation we get <em>x = 13/20.</em>

Step-by-step explanation:

<em>Given:</em>

<em>-3 x + 0.1 + 10 x = x + 4</em>

<em>-3 x + 10 x - x = 4 - 0.1</em>

<em>6 x = 3.9</em>

<em> x = \frac{3.9}{6}</em>

<em>x = \frac{1.3}{2}</em>

<em>x = \frac{13}{20}</em>

6 0
3 years ago
Solve for y
Gelneren [198K]

Answer:

1. Y= 5-3x

2. Y= -4-x

3. Y= -9-x

4. Y= 11-3x

5. Y=2x=5

7 0
3 years ago
Factorise: 2x² - x - 3​
andre [41]

Answer:

(2x-3)(x+1)

Step-by-step explanation:

2x²-x-3

(2x-3)(x+1)

3 0
3 years ago
Read 2 more answers
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