Ask question

Ask question

All categories

3 years ago

5

How I need to do.Gary has 58 trading cards on monday .on tuestay.his friend,Harry gave him some more.After that .Gary had 82 tra

ding cards .how many trading cards did Harry gave Gary.USE A NUMBER LINE TO REPRESENT AND SOLVE THIS PROBLEM.

2 answers:

rewona [7]3 years ago

5 0

You have to make it into a subtraction problem. 82-58=24

Effectus [21]3 years ago

4 0

24 I believe so, have not checked yet.

You might be interested in

The number of calories in five randomly selected 1-ounce chocolate chip cookies of various brands was measured. the recorded num

Troyanec [42]

21
125 calories
150 calories
185 calories
110 calories
140 calories
___
710 / 5

142calories

3 0

4 years ago

Jeff bicycles 126 miles at the rate of r mph. The same trip would have taken 2 hours longer if he had decreased his speed by 4 m

weqwewe [10]

Given Information:

Distance = 160 miles

Required Information:

Rate = r = ?

Answer:

Rate = r = 20 mph

Step-by-step explanation:

Recall that the rate is given by

Rate = distance/time

$r = \frac{d}{t} \\\\t = \frac{d}{r} \\\\t = \frac{160}{r} \\\\$

It is given that the same trip would have taken 2 hours longer if he had decreased his speed by 4 mph.

Mathematically,

$\frac{160}{(r-4)} = \frac{160}{r} + 2 \\\\$

Simplify the equation

$\frac{160}{(r-4)} - \frac{160}{r} = 2 \\\\\frac{160r - 160(r-4)}{r(r-4)} = 2 \\\\\frac{160r - 160r+640)}{r(r-4)} = 2 \\\\160r - 160r+640 = r(r-4) (2) \\\\640 = r(r-4) (2) \\\\640 = (r^2 - 4r) (2) \\\\640 = 2r^2 - 8r \\\\2r^2 - 8r-640 =0 \\\\2(r^2 - 4r-320) =0 \\\\r^2 - 4r-320 =0 \\\\$

Now we are left with a quadratic equation.

We may solve the quadratic equation using the factorization method

$r^2 - 4r-320 =0 \\\\r^2-20r+16r-320=0 \\\\r(r-20)+16(r-20)=0 \\\\(r-20) (r+16)=0 \\\\$

So,

$(r-20) = 0 \\\\r = 20 \\\\$

OR

$(r+16)=0 \\\\r = -16 \\\\$

Since rate cannot be negative, discard the negative value of r

Therefore, the rate is

$r = 20 \: mph$

3 0

4 years ago

Can someone solve this it's really urgent please thank you

scZoUnD [109]

Answer:

461.875 cubic cm

Step-by-step explanation:

Volume of wood in the block

= volume of cuboid - 3 times the volume of one hemisphere

$=lbh - 3\times \frac{2}{3} \pi r^3\\= 20\times 7\times 4 - 2\times 3.14\times (2.5)^3\\= 560 - 6.28\times 15.625\\= 560 - 98.125\\= 461.875 \: cm^3$

8 0

3 years ago

Jon and jim are cutting a log jon cut 1/5 of the log on one end while jim cut 2/9 of the log on the other side how much of the l

madreJ [45]

For this case, the full length of the log is equal to 1.

Therefore, the remaining length, we can obtain it by means of the following expression:

$1 - (\frac{1}{5}+\frac{2}{9})$

Rewriting we have:

$1 - \frac{19}{45}$

Then, subtracting both numbers we have:

$\frac{26}{45}$

Answer:

The remaining amount of log is given by:

$\frac{26}{45}$

5 0

3 years ago

Read 2 more answers

Which quadrilateral with side lengths shown will have a perimeter of 25 meters?

Flura [38]

The last one is the only one that adds up to 25m. You find the perimeter by adding the side lengths. 8+5+6+6=25

6 0

3 years ago