3 years ago

Will mark brainliest !!

Mathematics

2 answers:

emmasim [6.3K]3 years ago

5 0

-2x-4x+8y-y

-6x+ 7y is the correct answer

Ksju [112]3 years ago

3 0

Answer:

the second line I think

Step-by-step explanation:

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Jennifer earns $7.60 per hour working after school. She wants to buy a musical instrument and she needs at least $500. Write an

slega [8]

Answer:

Step-by-step explanation:

let h be the number of hours.

7.60 h≥ 500

76h≥5000

6 0

2 years ago

Write the number in two other forms 8.517

8090 [49]

8,517 8,000+500+10+7

7 0

2 years ago

Solve the Equation 3x + 5x - 5 = 19

Mila [183]

Answer:

x=3

Step-by-step explanation:

8 0

2 years ago

2) 45+ 17 = 62<br><br> 3) X + 5/6 = 7/16<br><br> 4) Y + 1/7 = 5/8

Montano1993 [528]

9514 1404 393

Answer:

2) true

3) X = -19/48

4) Y = 27/56

Step-by-step explanation:

3) Subtract 5/6 from both sides

X = 7/16 -5/6 = (7·6 -16·5)/(16·6) = (42 -80)/96

X = -19/48

4) Subtract 1/7 from both sides

Y = 5/8 -1/7 = (5·7 -8·1)/(8·7)

Y = 27/56

6 0

3 years ago

On the first day of spring, an entire field of flowering trees blossoms. The population of locusts consuming these flowers rapid

Elza [17]

Answer:

$L(t)=7600e^{0.2273t}$

Step-by-step explanation:

-The locust population grows by a factor and can therefore be modeled by an exponential function of the form:

$P=P_oe^{rt}$

Where:

$P$ is the population after t days.
$P_o$ is the initial population given as 7600
$r$ is the rate of growth
$t$ is time in days

-Given that the growth is by a factor of 5( equivalent to 500%), the r value will be 5

-The population increases by a factor of 5 every 22 days. therefore at any time instance, t will be divided by 22 to get the effective time for calculations.

Hence, the exponential growth function will be expressed as:

$P=P_oe^{rt},\ \ \ P=L(t)\\\\\therefore L(t)=7600e^{5\frac{t}{22}}\\\\=7600e^{0.2273t}$

7 0

3 years ago