All categories

2 years ago

Mr and mrs Jackson have 14 grandchildren. Find the ratio of girls to boys if there are four more girls than boys

Mathematics

2 answers:

MrRa [10]2 years ago

8 0

Answer:

5:9

Step-by-step explanation:

One Simple Method:

We can plug in values that are reasonable, such as 5 and 9. 5 represents the amount of boys and 9 represents the amount of girls. There's four more girls than boys, adding up both terms there's a sum of 14 grandchildren.

Another Method:

using and creating an equation.

x represents boys

y represents girls

Our equation for boys:

x(x+4)=14

2x+4=14

Subtract 4 from both sides

2x=10

x=5

x=5 represents 5 boys.

Use x=5 in our equation for girls.

5+y=14

Subtract 5 from both sides

y=9

y=9 represents 9 girls.

natulia [17]2 years ago

6 0

Answer:

5 boys to 9 girls

Step-by-step explanation:

Let x = the number of boys

Boys = x

Girls = x + 4

x + (x + 4) = 14

2x + 4 = 14

2x = 10

x = 5

This means that there are 5 boys. Since girls = x + 4, 5 + 4 = 9. There are 5 boys and 9 girls.

I hope this helped and please mark me as brainliest!

You might be interested in

Im so scared because if i get 1 more wrong i dont pass please help

sesenic [268]

The answer is parallelograms :-)

6 0

3 years ago

Read 2 more answers

'Nine less than the product of four and a number

maxonik [38]

Answer:

(4 x X)-9

Step-by-step explanation:

I think this is correct pls tell me if this is wrong

Hope this helps

7 0

2 years ago

A consumer group is interested in estimating the proportion of packages of ground beef sold at a particular store that have an a

storchak [24]

Answer: 267.

Step-by-step explanation:

When there is no prior information for the population proportion, then the formula we use to find the sample size to estimate the confidence interval :

$n=0.25(\dfrac{z^*}{E})^2$ , where z* = Critical z-value and E + amrgin of error.

Let p = proportion of packages of ground beef sold at a particular store that have an actual fat content exceeding the fat content stated on the label.

Since , we have no prior information about p. so we use above formula

with E = 0.06 and critical value for 95% confidence =z* =1.96 [By z-table ] , we get

$n=0.25(\dfrac{1.96}{0.06})^2=0.25(32.6666)^2\\\\=(0.25)(1067.111111)\\\\=266.777777778\approx267$

Hence, the required sample size is 267.

7 0

3 years ago

What is the volume of a box with a height of 3/2 inches, a length of 7/2 inches, and a width of 5/2 inches.

JulsSmile [24]

Answer:

13.125 cubic inches

Step-by-step explanation:

Volume of box is 3/2 X 7/2 X 5/2 = 105/8 = 13 1/8 = 13.125 cubic inches

4 0

3 years ago

Which linear function represents the line given by the point slope equation y - 2 - 4(x - 3)? O RX) - 6x 1 O Rx) = ax - 6 O P(x)

Sever21 [200]

Answer:

Use the given functions to set up and simplify O R X . y − 2 − 4 ( x − 3 ) = − 4 x + y + 10 O R X = − 4 x + y + 10

Step-by-step explanation:

4 0

2 years ago