Plz help will give brainliet to first

Mathematics

2 answers:

jarptica [38.1K]2 years ago

4 0

Answer:28-6=22 times x 2=54

Step-by-step explanation:

Nikolay [14]2 years ago

3 0

Answer:

how will you give brainliest if this is your first question and you just made the account?

Step-by-step explanation:

You might be interested in

Sum of $1000 was invested for 4 years, and the interest was compounded semiannually. If this sum amounted to $1389.08 in the giv

eduard

The answer is 8%

Compound interest formula is:
A = P(1 + r/n)ⁿˣ
A - the final amount
P - the initial amount
r - interest rate
n - number of compoundings per year
x - time period

We have:
A = <span>$1389.08
P = </span><span>$1000
r = ?
n = 2 (it is semiannual)
x = 4

</span>A = P(1 + r/n)ⁿˣ
1389.08 = 1000(1 + r/2)²*⁴
1389.08 = 1000(1 + r/2)⁸
(1 + r/2)⁸ = 1389.08/1000
(1 + r/2)⁸ = 1.389
$\sqrt[8]{(1 + \frac{r}{2} ) ^{8}} = \sqrt[8]{1.389} \\ 
1 + \frac{r}{2} =1.04 \\ 
 \frac{r}{2} = 1.04-1 \\ 
 \frac{r}{2} = 0.04 \\ 
r = 2*0.04 =0.08$
r = 0.08 = 8/100 = 8%

7 0

3 years ago

Cameron went into a grocery store and bought 4 apples and 7 mangos, costing a total of $17.75. Gavin went into the same grocery

Mekhanik [1.2K]

Answer:

apple: $2.25
mango: $1.25

Step-by-step explanation:

Let "a" and "m" represent the cost of an apple and a mango, respectively. Then Cameron's purchase can be represented as ...

4a +7m = 17.75

Gavin's purchase can be represented as ...

2a +5m = 10.75

Subtracting the first equation from twice the second gives ...

2(2a +5m) -(4a +7m) = 2(10.75) -(17.75)

3m = 3.75

m = 1.25

Then the price of an apple can be found from the second equation:

2a +5(1.25) = 10.75

2a = 4.50 . . . . . . . . . . subtract 6.25

a = 2.25 . . . . . . . . . . . divide by 2

The price of an apple was $2.25; the price of a mango was $1.25.

3 0

3 years ago

Find the missing length indicated.

kogti [31]

Answer:

Step-by-step explanation:

x is the geometric mean because it is a part of both the small triangle on the left (with base 81) and the whole triangle (with base 225). Setting up the geometric means formula:

$\frac{81}{x}=\frac{x}{225}$ and cross multiply to get