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3 years ago

My head hurts help will ya?

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

7 0

Answer:

multiple 5x3

Step-by-step explanation:

24 × [20 + (5×3)] ÷ 8

24 × [20+ (15)]÷8

24×[35]-8

840÷8=105

ziro4ka [17]3 years ago

6 0

Solution : 24 × [20 + (5 × 3)] ÷ 8

So, first let's solve the integers within perenthesis

24 × [20 + 15] ÷ 8

24 × 35 ÷ 8

Now, we need to divide it first after which we'll multiply the rest

24 × 4.375

The answer should be 105

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The cell phone company that Laura uses charges $40.00 per month for 500 minutes and $0.40 per minute for every minute over 500 m

Lubov Fominskaja [6]

Answer:

Laura's cell phone bill for September is $65,20

Step-by-step explanation:

4 0

3 years ago

Sari has 3 times as many pencil erasers as Sam. Together, they have 28 erasers. How many erasers does Sari have?

BartSMP [9]

Let

x--------> amount of erasers that Sari has

y--------> amount of erasers that Sam has

we know that

$x=3y$ -------> equation $1$

$x+y=28$ -----> equation $2$

Substitute equation $1$ in equation $2$

$[3y]+y=28\\ 4y=28\\ y=28/4\\ y=7$

find the value of x

$x=3y\\ x=3*7\\ x=21$

therefore

the answer is

Sari has $21$ erasers

8 0

3 years ago

Read 2 more answers

the local water slides have 70 employees, of which 10% are temporary. how many temporary employees are there?

aalyn [17]

Answer:

7 employees

Step-by-step explanation:

Given that 10% are temporary .

So number of temporary employees will be 10% of 70 employees = 7employees ( Answer)

8 0

3 years ago

What is 5X minus Y equals 6+ negative 2X plus Y=8

vova2212 [387]

Answer:

For the given expression: $X = (\frac{10}{3}) , Y = (\frac{26}{3})$

Step-by-step explanation:

Here, the given expression in statement form is given as:

5 X minus Y equals 6 + negative 2 X plus Y = 8

Now, converting the given statement mathematically, we get:

5X - Y = 6 + (-2X) + Y = 8

Now, considering first and the last terms,we get:

5 X - Y = 8 .... (1)

and , considering second and the last terms,we get:

6 + (-2X) + Y = 8 or, -2X + Y = 2 ......... (2)

Adding (1) and (2) , we get:

5 X - Y - 2 X + Y = 8 + 2

or, 3 X = 10

or, X = 10/3 = 3.34

Now, 5X - Y = 8

or, $5(\frac{10}{3}) - Y = 8\\ \implies Y = \frac{50}{3} - 8 = \frac{50 - 24}{3} = \frac{26}{3} \\\implies Y = \frac{26}{3}$

Hence, for the given expression:

$X = (\frac{10}{3}) , Y = (\frac{26}{3})$

3 0

3 years ago

Calculate the length b to two decimal places.

Andrej [43]

Answer:

B. 21.64

Step-by-step explanation:

We have been given a triangle and we are asked to find the length of AC (b).

We will use law of cosines to find the length of side AC.

$c^{2}=a^{2}+b^{2}-2ab \text{ cos }\theta$

Upon substituting our given values in the formula we will get,

$(AC)^{2}=15^{2}+12^{2}-2\times 15\times 12 \text{ cos}(106)$

$(AC)^{2}=225+144-360\text{ cos}(106)$

$(AC)^{2}=369-360(-0.275637355817)$

$(AC)^{2}=369+99.22944809412$

$(AC)^{2}=468.22944809412$

Upon taking square root of both sides of our equation we will be get,

$AC=\sqrt{468.22944809412}$

$AC=21.6386101238993629\approx 21.64$

Therefore, the length of b is 21.64 and option B is the correct choice.

6 0

3 years ago

My head hurts help will ya?​

My head hurts help will ya?