1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ira [324]
3 years ago
6

rectangle A has 7 times the area of rectangle B. The width of rectangle A is 1/4 the width of rectangle B. The height of rectang

le A is 12 cm. What is the height of rectangle B?
Mathematics
1 answer:
algol133 years ago
8 0

Answer:

just do 7 times 1/4 + the 12 thats your answer

Step-by-step explanation:

You might be interested in
The sophomore class needs a combined total of 216 medium and large t-shirts for field day. The number of medium t-shirts needed
algol [13]
It could be c as your answer
7 0
3 years ago
Please help :(<br>Solve the qaudratic equation given below<br>(9x + 13)² = 49(9x + 13)² = 49​
NemiM [27]

Answer:

Im pretty sure ur answers would be

x= -32/27 and X=  -46/27

Step-by-step explanation:

So srry if im wrong tho

5 0
3 years ago
A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat
Marizza181 [45]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by \alpha=1-0.90=0.1 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.04 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We assume that a prior estimation for p would be \hat p =0.5 since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

5 0
3 years ago
You pick a card at random. You put the first card back, and you pick a second card at
Fudgin [204]

Answer:

Step-by-step explanation:

maybe 8 or 1/9

8 0
3 years ago
9/25 of Polly's co-workers prefer tea over coffee.
snow_tiger [21]

Answer:

36%

Step-by-step explanation:

9/25 x 100

= 36%

3 0
3 years ago
Read 2 more answers
Other questions:
  • Write an equation of the line passing through (-5,5) and having slope -6. Guve the answer in slope-intercept form.
    11·1 answer
  • A parking garage has spaces for 70 cars and charges each driver $6 per day for parking. If the garage is full, how much more wou
    9·2 answers
  • I will give brainiest to whoever answers this 20 is 25% of what number? enter your answer in the box . plz help
    14·1 answer
  • 3. Ivan has 15 yards of green felt and 12 yards of
    11·2 answers
  • (x2 + 3x – 4) + (2x3 - 2x + 5)​
    13·2 answers
  • Pleaseeeee helppp meee!!!
    11·2 answers
  • The water level of a certain body of water is changing at a rate of W(t)=3/4cos(4-t/2) inches per hour, where t represents hours
    7·1 answer
  • Please help very urgent
    5·1 answer
  • The girls tennis team was interested in raising funds for an upcoming trip. The team sold tumblers for $10 and sun hats for $5
    7·2 answers
  • Please help!!! If...........
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!