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3 years ago

1. What’s the answer to this question please

Mathematics

1 answer:

iogann1982 [59]3 years ago

6 0

Answer:

h = 0.05d + 2.

Step-by-step explanation:

Every day it grows 0.05 cm. so after d days it has grown 0.05d cm. It starts at height 2 cm so the formula is h = 0.05d + 2.

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jarptica [38.1K]

Answer:

3 gallons

Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

$100\%=100/100=1$

$20\%=20/100=0.20$

$60\%=60/100=0.60$

we know that

$(1)(x)+(0.20)(3)=(0.60)(x+3)$

solve for x

$x+0.60=0.60x+1.80$

$x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal$

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in order to get a 60% acid solution

7 0

3 years ago

WILL GIVE BRAINLIEST IF YOU HELP ME

Oduvanchick [21]

The answer is D. point S

8 0

3 years ago

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Isabella backed cookies for 3 hours. She spent the same amount of time baking each batch. It took her one eighth an hour to bake

katovenus [111]

I believe it is 24 batches:

because there are 8/8 in one hour, so you multiply that by three. which would give you 24!

5 0

3 years ago

A recent poll of 120 randomly selected adults who frequent the local farmer's market found that 54 have purchased reusable clot

Olenka [21]

Answer:

95% Confidence interval: (0.361,0.539)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 120

Number of farmers who reusable cloth bags, x = 54

$\hat{p} = \dfrac{x}{n} = \dfrac{54}{120} = 0.45$

95% Confidence interval:

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

Putting the values, we get:

$0.45\pm 1.96(\sqrt{\dfrac{0.45(1-0.45)}{120}}) = 0.45\pm 0.089\\\\=(0.361,0.539)$

is the required 95% confidence interval for the proportion of adults who have purchased reusable cloth bags.

3 0

3 years ago

For which of the following conditions will the sum of integers m and n always be an odd integer?

lisov135 [29]

Answer:

option K cuz

Step-by-step explanation:

if we take m=7 and n=2

7 + 2= 9

and 9 is an odd number

5 0

3 years ago

Read 2 more answers