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3 years ago

Sum of 4 times a number and twice the sum of the same number and three

Mathematics

2 answers:

Kitty [74]3 years ago

5 0

Answer: 56 (i think)

Step-by-step explanation:

4x[2(4+3)]

4[2x7]

4x14

Setler [38]3 years ago

4 0

$\large \mathfrak{Solution : }$

let the number be " x "

According to the above statement :

$4x + 2(x + 3)$

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Strawberries are $2.50 A pound and cantaloupes are $2.25 at the local supermarket. Sally bought 7 pounds of the two kinds of fru

Vlad1618 [11]

Answer:

Sally bought 4 pounds of Strawberries and 3 pounds of Cantaloupes.

Step-by-step explanation:

Let the number of pounds of Strawberries bought by Sally = x

Let the number of pounds of Cantaloupes bought by Sally = y

$x + y = 7$ ---------------------------------(1)

Moreover,

$2.5 x + 2.25 y = 16.75$ ---------------(2)

Solving (1) and (2) by substitution:

$x = 7 - y$

=> $2.5 *(7-y) + 2.25 y = 16.75$

=> $17.5 - 2.5y + 2.25 y = 16.75$

=> $0.25y = 0.75$

=> $y = 3$

From (1), x = 7-3 = 4

7 0

3 years ago

the interest earned on an account varies directly with the balance in the account. if an account with a balance of $200 earns $1

sp2606 [1]

$\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}$

$\bf \stackrel{\textit{\underline{I}nterest varies with \underline{b}alance}}{I=kb}\qquad \qquad \textit{we know that } \begin{cases} b=200\\ I=12.5 \end{cases} \\\\\\ 12.5=k200 \implies \cfrac{12.5}{200}=k\implies \cfrac{~~\frac{125}{10}~~}{\frac{200}{1}}=k\implies \cfrac{125}{10}\cdot \cfrac{1}{200}=k \\\\\\ \cfrac{1}{16}=k \qquad \qquad \textit{therefore}\qquad \boxed{I=\cfrac{1}{16}b} \\\\\\ \textit{when b = 500, what is \underline{I}?}\qquad I=\cfrac{1}{16}(500)\implies I=\cfrac{125}{4}\implies I=31.25$

3 0

3 years ago

A pair of vertical angles have measures (2y+5)° and (4y)°.

Molodets [167]

I believe with vertical angles, they are equal to each other.

Therefore,

2y + 5 = 4y

subtract 2y from both sides

5 = 2y

divide 2 from both sides

y = 5/2

8 0

3 years ago

Read 2 more answers

there are 32 pets at pet store .there are 3 times as many mammals as reptiles in store.. how many reptiles are there at the pat

mr_godi [17]

Well i would do this 32*3=96 but not sure.

7 0

3 years ago

The number of hours you study for an exam affects your grade. What is a reasonable value of the range?

Gwar [14]

Answer:

Step-by-step explanation: