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matrenka [14]
3 years ago
12

NEED HELP URGENT!! :))))

Mathematics
2 answers:
bija089 [108]3 years ago
4 0

Answer:

18 cm²

Step-by-step explanation:

Base * half height says 6*6/2 = 18.

The trick is to put the 90° angle at the base (rotate the triangle).

hoa [83]3 years ago
3 0

Answer:

Step-by-step explanation:

Area of a triangle =1/2×b× h

You can only find the 90° angle opposite the longest side of the triangle.

1/2×(6×6)cm

= 1/2×36cm

=36cm²/2

=18cm²

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Bill and Joe leave their house at the same time heading in opposite directions. If Bill is driving three times faster than Joe a
Arisa [49]

The problem statement gives you the relationship between their speeds, and it gives you information you can use to find their total speed. You solve this by finding the total speed, then the proportion of that belonging to Bill.

The total speed is (120 mi)/(3 h) = 40 mi/h.

The speed ratio is ...

... Bill : Joe = 3 : 1

so the speed ratio Bill : Total is ...

... 3 : (3+1) = 3:4.

Bill's speed is (3/4)×(40 mi/h) = 30 mi/h.

4 0
3 years ago
How can I calculate a square root without guess and check?
Darina [25.2K]
By multiplying the same numbers.

2*2=4 *4 square root is 2

3*3=9 *9 square root is 3

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Try this, maybe it will work :)
3 0
2 years ago
solve this system of linear equations. Separate the X- and Y- values with a comma. -9x+2y=-16 19x+3y=41​
Serjik [45]

Answer:

(2, 1)

Step-by-step explanation:

The best way to do this to avoid tedious fractions is to use the addition method (sometimes called the elimination method).  We will work to eliminate one of the variables.  Since the y values are smaller, let's work to get rid of those.  That means we have to have a positive and a negative of the same number so they cancel each other out.  We have a 2y and a 3y.  The LCM of those numbers is 6, so we will multiply the first equation by a 3 and the second one by a 2.  BUT they have to cancel out, so one of those multipliers will have to be negative.  I made the 2 negative.  Multiplying in the 3 and the -2:

3(-9x + 2y = -16)--> -27x + 6y = -48

-2(19x + 3y = 41)--> -38x - 6y = -82

Now you can see that the 6y and the -6y cancel each other out, leaving us to do the addition of what's left:

-65x = -130 so

x = 2

Now we will go back to either one of the original equations and sub in a 2 for x to solve for y:

19(2) + 3y = 41 so

38 + 3y = 41 and

3y = 3.  Therefore,

y = 1

The solution set then is (2, 1)

6 0
2 years ago
Read 2 more answers
Find the height of a triangle with a base of 4 1/4 cm and an area of 5 5/16 cm squared
Paha777 [63]

Answer:

hb=2.5

Step-by-step explanation:

base = 4

area  =  5

6 0
3 years ago
Graph the image of rhombus EFGH after a reflection across the line x = 3
igomit [66]

Answer:  see image

<u>Step-by-step explanation:</u>

Draw line x = 3.  Count how many units each point is away from line x = 3. Plot the new point the same number of units away from line x = 3 but in the opposite direction.

Point G is 4 units to the left of x = 3. The new point G' is 4 units to the right of x = 3.

Point F is 7 units to the left of x = 3. The new point G' is 7 units to the right of x = 3.

Point E is 7 units to the left of x = 3. The new point G' is 7 units to the right of x = 3.

Point H is 4 units to the left of x = 3. The new point G' is 4 units to the right of x = 3.

8 0
3 years ago
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