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3 years ago

Simplify 14b^2 + a- 2b^2

Mathematics

2 answers:

ser-zykov [4K]3 years ago

8 0

can yall help me on mines!

VladimirAG [237]3 years ago

7 0

$14 {b}^{2} + a - 2 {b}^{2}$
$12 {b}^{2} + a$

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In his first trip around a field, a farmer makes 123 bales. In his second trip, he makes 11 fewer bales. Because each trip is sh

aleksley [76]

Answer:

630

Step-by-step explanation:

The sum of an arithmetic sequence is given by ...

Sn = n(2a1 +(n-1)d)/2

For the sequence of numbers of bales, we have ...

a1 = 123, d = -11, n = 7

so the total number of bales in 7 trips around the field is ...

S7 = 7(2·123 +6(-11))/2 = 630

The total number of bales made is about 630.

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123 + 112 + 101 + 90 + 79 + 68 + 57 = 630

5 0

3 years ago

There are 38 students involved in planning the homecoming parade. Of these students,

vekshin1

Answer:

60.5% chance

Step-by-step explanation:

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6 0

2 years ago

What percent of 752 is 25?

wariber [46]

25 is about 3.32% of 752.

5 0

3 years ago

Expand and simplify (n-2)(3n+7) + 2n(2n+3)

KonstantinChe [14]

3n^2+7n-6n-14+4n^2+6n= 7n^2+7n-14

Hope that helps and best of wishes!

6 0

3 years ago

I need help with this problem

Soloha48 [4]

Answer:

$3.\ \dfrac{3x}{11x}, \dfrac{6}{22}, \dfrac{9}{33},\dfrac{12}{44}$

$4. -18\\5.\ 400$

Step-by-step explanation:

Solution 3:

Equivalent fractions to are to $\frac{3}{11}$ be found out.

Method: By Multiplying both the denominator and numerator with the same number, we can easily find equivalent fractions.

1. Multiply with 2:

$\dfrac{3 \times 2}{11 \times 2}\\\Rightarrow \dfrac{6}{22}$

2. Multiply with 3:

$\dfrac{3 \times 3}{11 \times 3}\\\Rightarrow \dfrac{9}{33}$

3. Multiply with 4:

$\dfrac{3 \times 4}{11 \times 4}\\\Rightarrow \dfrac{12}{44}$

If we try to write in variable form, it can be written as:

$\dfrac{3x}{11x}$

where x is any number.

---------------

Solution 4:

$(2x-10)$ when $x=-4$

$2 \times (-4) -10\\\Rightarrow -8 -10\\\Rightarrow -18$

------------

Solution 5:

$(10a)^2, a=-2\\\Rightarrow \{10 \times (-2)\}^2\\\Rightarrow (-20)^2\\\Rightarrow 400$

4 0

3 years ago