All categories

3 years ago

Please I really need to know the answer now! I need to submit this tomorrow!

Mathematics

1 answer:

zaharov [31]3 years ago

8 0

Let the weights of the cherries held by Kristin and Doris be k and d, respectively. Kristin holds 4.2 kg fewer cherries than Doris: k = d - 4.2.

After Kristin sells 0.85 kg of cherries, k - 0.85 represents her holdings. Doris' holdings are twice Kristin's, or d = 2(k-0.85).

Find Doris' holdings. Eliminate the variable k:

Substitute d - 4.2 for k in d = 2(k-0.85): d = 2( [d - 4.2] - 0.85).

Perform the indicated multiplication now: d = 2d - 8.4 - 1.7.

Grouping like terms: 10.1 = d. Doris holds 10.1 kg of cherries.

You might be interested in

Braiist can someome pls explain i dont know

Greeley [361]

Answer:

Step-by-step explanation:

Using the rule of exponents

$\frac{a^{m} }{a^{n} }$ = $a^{m-n}$

Consider the left side

$\frac{n^{x} }{n^{y} }$ = $n^{x-y}$ , then

$n^{x-y}$ = n²

Since bases on both sides are equal, equate the exponents

x - y = 2 → G

5 0

3 years ago

What is the inverse of f(x)=2^x

GuDViN [60]

Answer:

Step-by-step explanation:

$f(x)=2^x$

$y = {2}^{x}$

$x = {2}^{y}$

${2}^{y} = x$

$ln( {2}^{y} )=ln(x)$

$yln(2)=ln(x)$

<h3> $\frac{yln(2)}{ln(2)} = \frac{ln(x)}{ln(2)}$ </h3><h3> $y = \frac{ln(x)}{ln(2)}$ </h3><h3> ${f}^{ - 1} (x) = \frac{ln(x)}{ln(2)}$ </h3><h3>Hope it is helpful...</h3>

3 0

3 years ago

Solve the system of equations using the tables below

Bezzdna [24]

Answer:

(x, y) = (0, 3)

Step-by-step explanation:

(x, y) = (0, 3) is in both tables. Hence, that point is a solution to the system of equations.

7 0

3 years ago

Mrs.Stone is three times older than her younger daughter, Joyce, but only two times older than her older daughter, Alex. How old

olchik [2.2K]

Answer:

54 years

Step-by-step explanation:

Joyce age = x

Alex age = y

3x = 2y - - - (1)

y - 9 = 2(x - 9)

y - 9 = 2x - 18

-9 + 18 = 2x - y

9 = 2x - y

y = 2x - 9 - - (2)

3x = 2y

3x = 2(2x - 9)

3x = 4x - 18

18 = 4x - 3x

18 = x

Hence,

Mrs stone is 3 * 18 = 54 years

5 0

3 years ago

Drag each tile to the correct box.

ivolga24 [154]

Answer:

1 and 27, 12 and 33, 6 and 24, 36 and 81, 12 and 96.

Step-by-step explanation:

GCF of 36 and 81: 9

GCF of 1 and 27: 1

GCF of 12 and 33: 3

GCF of 12 and 96: 12

GCF of 6 and 24: 6

3 0

3 years ago