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3 years ago

The numbers in the select boxes are 4 7 and 3 I put them with the photos. Can someone help

Mathematics

2 answers:

morpeh [17]3 years ago

8 0

Answer:

It is simply 4:3

ss7ja [257]3 years ago

5 0

Answer:

4:7

Step-by-step explanation:

4 grape candies : 7 total candies (grape + cherry)

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Kayson mixes 300 milliliters ( mL ) (mL) of spinach, 200mL of berries, and 42mL of dressing to make a salad. There are s s milli

BigorU [14]

Answer:

X= (300 s + 200 b + 42 d )mg

Step-by-step explanation:

Amount of spinach=300 ml

Amount of berries =200 ml

amount of dressing = 42 ml

Vitamin C in one ml of spinach = s mg

Vitamin C in 300 ml of spinach = 300 s mg

Vitamin C in one ml of berries=b mg

Vitamin C in 200 ml of berries = 200 b mg

Vitamin C in one ml of dressing = d mg

Vitamin C in 42 ml of dressing = 42 d mg

Let total vitamin C be = x

Then

X= (300 s + 200 b + 42 d )mg

is the required expression

4 0

3 years ago

WILL MARK BRAINY!!!

Kay [80]

Your answer should be C

3 0

3 years ago

Read 2 more answers

An insurance company works with two auto repair shops and wants to compare their prices. Company officials randomly select 12 da

Grace [21]

Answer:

C) H0:μd=0 and Ha:μd≠ 0

Null hypothesis: $\mu_d = 0$

Alternative hypothesis: $\mu_d \neq 0$

Step-by-step explanation:

A paired t-test is used to compare two population means where you have two samples in which observations in one sample can be paired with observations in the other sample. For example if we have Before-and-after observations (This problem) we can use it.

Let put some notation

x=value for the first shop , y = value for the second shop

The system of hypothesis for this case are:

Null hypothesis: $\mu_y- \mu_x = 0$

Alternative hypothesis: $\mu_y -\mu_x \neq 0$

Or equivalently :

Null hypothesis: $\mu_d = 0$

Alternative hypothesis: $\mu_d \neq 0$

Since we define the difference $d_i=y_i-x_i$ and we obtain this:

The second step is calculate the mean difference

$\bar d= \frac{\sum_{i=1}^n d_i}{n}$

The third step would be calculate the standard deviation for the differences, and we got:

$s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1}$

The 4 step is calculate the statistic given by :

$t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=t_{calculated}$

The next step is calculate the degrees of freedom given by:

$df=n-1=12-1=11$

Now we can calculate the p value, since we have a two tailed test the p value is given by:

$p_v =2*P(t_{(11)}>|t_{calculated}|)$

C) H0:μd=0 and Ha:μd≠ 0

5 0

3 years ago

4plss help its timed...

galina1969 [7]

Answer:

width = 5.29 ft

Step-by-step explanation:

a² + 6² = 8²

a² = 64 - 36

a² = 28

a = √28

a = 5.29 ft

3 0

2 years ago

Read 2 more answers

Explanation of two column proofs? (geometry)

Stella [2.4K]

Answer:

Two Column Proofs. Two column proofs are organized into statement and reason columns. Each statement must be justified in the reason column. Before beginning a two column proof, start by working backwards from the "prove" or "show" statement. The reason column will typically include "given", vocabulary definitions, conjectures, and theorems.

Step-by-step explanation:

hope this helps :)

3 0

3 years ago