All categories

3 years ago

Helpppppp meeeee pleaseeeee

Mathematics

2 answers:

Nastasia [14]3 years ago

8 0

-2

In the morning it was 8 degrees celsius, and in the night it was 10 degrees lower. You are trying to find a number that's 10 degrees lower than 8. So you would do:

8-10

That would result in -2

Novay_Z [31]3 years ago

7 0

Answer:

B) -2 degrees

Step-by-step explanation:

If the temperature went down 10 degrees the equation you need to use is 8-10=x.

Once simplified/solved you will get -2

You might be interested in

4� − 5 = −9<br> Help Me plssssss!!!!

ki77a [65]

Answer:

Step-by-step explanation:

multiply 5 x 9 45 divided by 5 = 9

6 0

3 years ago

In the rectangular trapezoid ABCD AC is driven by a CD (see figure).

eimsori [14]

Answer:

solution given:

let's see only in a right-angled triangle Δ ACD.

AC=3 units

AD=5 units

since Δ ACD is a right-angled triangle. It satisfies Pythagoras law

$AD^{2}=AC^{2}+CD^{2}$

25=9+ $CD^2$

$CD^2$ =25-9=16

$CD=\sqrt{16} =4 units$

Now

Area of rectangle Δ ACD= $\frac{1}{2} CD*AC=\frac{1}{2}*4*3=6\: square \:units$

similarly,

$\frac{1}{2} AD*CE=6\: square \:units\\ 5*CE=6*2\\CE=\frac{12}{5}=2.4 units$

since AB=CE=2.4 units

Δ ACE is a right-angled triangle. It satisfies Pythagoras law.

$AC^{2}=AE^{2}+CE^{2}\\3^2=AE^2+2.4^2\\9-5.76=AE^2\\AE and BC=\sqrt{1.24} =1.11 units$

now

area of trapezoid=area ofΔACD+Area of ΔABC

=6+ $\frac{1}{2}AB*BC=6+\frac{1}{2}*2.4*1.11=6+1.33 =7.33\: square \:units$

6 0

2 years ago

Find the GCF and LCM of 217x328x11 and 213x345x74and explain your reasoning.

AfilCa [17]

Answer:

Given expressions are,

217 x 328 x 11

213 x 345 x 74,

Since, 217 = 7 × 31

328 = 2 × 2 × 2 × 41,

11 = 1 × 11,

So, we can write, 217 x 328 x 11 = 7 × 31 × 2 × 2 × 2 × 41 × 1 × 11

Now, 213 = 3 × 71

345 = 3 × 5 × 23,

74 = 2 × 37,

So, 213 x 345 x 74 = 3 × 71 × 3 × 5 × 23 × 3 × 5 × 23

Thus, GCF ( greatest common factor ) of the given expressions = 1 ( because there are no common factors )

We know that if two numbers have GCF 1 then their LCM is obtained by multiplying them,

Hence, LCM ( least common multiple ) of the given expressions = 217 x 328 x 11 x 213 x 345 x 74

6 0

4 years ago

Grant's credit card has an apr of 11.28% and it just changed its compounding period from monthly to daily . What happen to the i

madreJ [45]

Answer:

C. It will increase by about 0.6%

Step-by-step explanation:

Since, the effective interest rate is,

$r=(1+\frac{i}{n} )^{n} -1$

Where, i is the stated interest rate,

n is the number of compounding periods,

Here, i = 11.28 % = 0.1128,

n = 365 ( 1 year = 365 days ),

Hence, the effective interest rate would be,

$r=(1+\frac{0.1128}{365})^{365} -1$

=0.119388521952

Now, the changes in effective interest rate = Effective interest rate - Stated interest rate

= 0.119388521952 - 0.1128

= 0.006588521952 ≈ 0.006 = 0.6 %

Hence, It will increased by about 0.6 %,

Option A is correct.

Hope this helps :)

7 0

3 years ago

A bag contains 17 cards numbered 1 through 17 . A card is randomly chosen from the bag. What is the probability that the card ha

Pachacha [2.7K]

Answer: 8/17

Explanation:
2, 4, 6, 8, 10, 12, 14, 16 are all the possible even numbers from 1 through 17.

6 0

4 years ago

Helpppppp meeeee pleaseeeee​

Helpppppp meeeee pleaseeeee