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3 years ago

Help please the question is on the image

Mathematics

1 answer:

madam [21]3 years ago

3 0

Answer:

Step-by-step explanation:

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5x^(-2)-17x^(-1)+6<br> i’m so confused pls help<br> will give brainliest

laila [671]

It's a quadratic equation in disguise. If you let $y=x^{-1}$ , then $y^2=x^{-2}$ , and we can rewrite the equation as

$5y^2-17y+6=0$

Solve for $y$ however you like; we get $y=\dfrac25$ and $y=3$ .

But we want to solve for $x$ , so we have

$y=x^{-1}=\dfrac25\implies x=\dfrac52$

$y=x^{-1}=3\implies x=\dfrac13$

5 0

4 years ago

Simplify the expression: 2( 5 t + J) + 3( 2t + 4 J )

Irina-Kira [14]

Answer:

16t + 14J

Step-by-step explanation:

1) First, you have to multiply the numbers

New Expression: 10t + 2J + 6t + 12J

2) Now, you have to find the like terms and add them together

New Expression: 16t + 14J

Hope this helps!

7 0

3 years ago

Draw a two-card hand from a well-shuffled standard deck of cards. Given that the first card is a King, what is the chance the se

Leni [432]

Answer:

P ≈ 0,94

Step-by-step explanation:

The normal deck of cards consists of 52 cards, (with 4 kings )

If we take a king a deck will have 51 cards ( three kings )

The probability to get a non-king card is

Probability of non-king card (P) = 1 - Probability of getting a king card (P₁)

Probability of getting a king card P₁= 3/51 ≈ 0,059

Then P = 1 - 0,059

P ≈ 0,94

7 0

3 years ago

T/2 + 3 = 5 (solve for t)

Mashutka [201]

Answer:

t = 4

Step-by-step explanation:

Given

$\frac{t}{2}$ + 3 = 5 ( subtract 3 from both sides )

$\frac{t}{2}$ = 2

Multiply both sides by 2 to clear the fraction

t = 2 × 2 = 4

7 0

4 years ago

Very important question please solve it;(

matrenka [14]

Answer:

we know that 120 liked both places and 200 liked Pokhara. To find the number of students that only liked Pokhara 200-120=80 students

we know that 120 liked both places and 220 liked Chitwan. To find the number of students that only liked Chitwan 220-120=100 students

to find number of students that liked neither of places:

add

80+120+100=300. Subtract by total number of students.

350-300=50 students

6 0

3 years ago