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disa [49]
3 years ago
15

would really appreciate it if anyone could help me, I keep getting my calculations wrong and the website keeps saying my answer

is wrong please help

Mathematics
1 answer:
stich3 [128]3 years ago
8 0

Answer:

In an isosceles triangle, the two legs have the same length. So if one leg is 2x-5, the other leg is also 2x-5 .let the other side be x.

we know,The perimeter is the sum of the three sides of the triangle:

x+2x-5+2x-5=20° [ given]

x+2x+2x-10=20

5x=20+10

5x=30

x=30/5

x=6.

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K(t)=10t−19 k=-7 k=-7=<br> Please help
igomit [66]

Answer:

t = 6/5

Step-by-step explanation:

Step 1: Define

k(t) = 10t - 19

k(t) = -7

Step 2: Substitute and Evaluate

-7 = 10t - 19

12 = 10t

t = 6/5

6 0
4 years ago
The ratio of the ages of A and B is 3:5 . if B is 8 years elder to A then what is the ages of A
Kruka [31]
12 is ans or what is the ans
4 0
4 years ago
Differentiate 3x-5/x²-4x​
PolarNik [594]

I assume you mean (3x - 5)/(x² - 4x).

Using the quotient rule, the derivative would be

((x² - 4x) • 3 - (3x - 5) • (2x - 4)) / (x² - 4x)²

= (3x² - 12x - 6x² + 22x - 20) / (x² - 4x)²

= - (3x² - 10x + 20) / (x² - 4x)²

7 0
3 years ago
2^n-5×5^n-4=5
Papessa [141]

\huge{\fbox{\sf{n=5 }}}

Step 1:

⇒ {2}^{n - 5}   \times  {5}^{n - 4}  = 5

Step 2:

⇒{2}^{n - 5}  \times  {5}^{n - 4}  =  {5}^{1}  \times  {2}^{0}

On comparing values we get:

Taking:

{2}^{n - 5}  =  {2}^{0}

n-5=0

n=5✓

or

Taking:

{5}^{n - 4}  =  {5}^{1}

n-4=1

n=5✓

3 0
3 years ago
Shirley is saving money to buy a computer.
deff fn [24]

Answer:

It will take her 15 weeks to have enough money for the computer.

Step-by-step explanation:

$1200 - $300 = $900

900 divided by 60 gives you 15

Therefor, it'll take Shirley 15 weeks to save $1200.

4 0
3 years ago
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