3 years ago

Rewrite using the distributive property then solve. 3(5+7)

Mathematics

2 answers:

Varvara68 [4.7K]3 years ago

4 0

Answer:

Step-by-step explanation:

3(5+7)

multiply 3 and 5

then multiply 7 and 3

15 + 21

which is 36

dolphi86 [110]3 years ago

3 0

Answer:

Step-by-step explanation: 3 x 5 =15 + 3 x 7 =21 15+21=36

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y=3x^2+34

3x+y-10=0

Step-by-step explanation:

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2 years ago

Tripp and Rico are two dogs. Tripp weighs exactly 35 pounds more than Rico. Together, they weigh exactly 49 pounds. How much doe

babymother [125]

Call the weights of the two dogs $t$ and $r$ .

We know that Tripp weights 35lbs more than Rico, or:
$t=r+35$

We also know that the total weight of both dogs is 49lbs.:
$t+r=49$

Now, by substitution:
$(r+35)+r=49$
$2r+35=49$
$2r+35-35=49-35$
$2r=14$
$r=\frac{14}{2}$
$r=7$
Rico weighs 7lbs.

Then:
$t=r+35$
$t=7+35$
$t=42$
Tripp weighs 42lbs.

To check our work:
$t+r=49$
$42+7=49$
$49=49$ CHECK!