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Rashid [163]
4 years ago
5

Okay so can any of you plsssssss help me with this problem like literally my brain is dead trying to figure out. I don't care wh

o you are, just help me PLEASE!
Question: 2+1=?

Btw Im in first grade so Im still really stupid so please help me.

Pretty sure the answer is 21 but still want to make sure. :)
Mathematics
2 answers:
KIM [24]4 years ago
6 0

Answer:

haha it's 3

Step-by-step explanation:

2 plus 1 equals 3

Viefleur [7K]4 years ago
5 0

The answer would be three.

2 + 1 = 3.

If you ever are stuck on simple addition, then you can do the finger trick. For this problem, you can hold up two fingers, and hold up one, and count them. This gives you three.

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Two parallel lines are crossed by a transversal. Vertical and parallel lines h and i are cut by transversal g. At the intersecti
eduard

Answer:

x = 70

Step-by-step explanation:

3 0
3 years ago
Which numerical expression represents the following calculation?
neonofarm [45]

Answer:

19

Step-by-step explanation:

Given the expression:

Add the quotient of 35 and 5 to the product of 2 and 6.

Quotient of 35 and 5 :

35 / 5 = 7

Product of 2 and 6 :

(2 * 6). = 12

Adding the result of the both calculations :

7 + 12 = 19

Writing the expression together :

35/5 + (2 * 6)

7 + 12

8 0
3 years ago
A small school had 60% boys and the rest are girls if the number of boys is 48 what is the total number of boys and girls all to
Flura [38]

Hey there!

When dealing with percent word problems, the word "is" means equals. Let's see what we can do with your problem.

If the small school had 60% boys, it will have 40% girls. The number of boys <em>is</em> 48, which should equal 60% of the total, which we can model below, with t representing the total number of kids. In decimal form, 60% is 0.6.

0.6t=48

We divide both sides by 0.6.

t=80

Therefore, there are 80 total kids at the school.

We can also check our answer below.

BOYS: 0.6(80)= 48

GIRLS: 0.4(80)=32

48+32=80

I hope that this helps!

5 0
3 years ago
Determine whether the following are subspaces of R2×2 : (a) Thesetofall2×2diagonalmatrices (b) The set of all 2 × 2 triangular m
Mrrafil [7]

A vector space V is a subspace of a vector space W if

  • V is non-empty,
  • for any two vectors v_1,v_2\inV we have v_1+v_2\in V, and
  • for any scalar k and v\in V we have kv\in V.

It's easy to show the first condition is met by all the sets in parts (a-g).

(a) is a subspace of \Bbb R^{2\times2} because adding any 2x2 diagonal matrices together, or multiplying one by some scalar, gives another diagonal matrix.

(b) and (c) are also subspaces for the same reasons.

(d) is not a subspace because \Bbb R^{2\times2} because this set of matrices does not contain the zero matrix.

(e), however, is a subspace. Any linear combination of matrices in this set always yields a matrix with 0 in row 1, column 1 entry.

(f) is a subspace. A symmetric matrix is one of the form

\begin{bmatrix}a&b\\b&c\end{bmatrix}

Adding two symmetric matrices gives another symmetric matrix:

\begin{bmatrix}a_1&b_1\\b_1&c_1\end{bmatrix}+\begin{bmatrix}a_2&b_2\\b_2&c_2\end{bmatrix}=\begin{bmatrix}a_1+a_2&b_1+b_2\\b_1+b_2&c_1+c_2\end{bmatrix}

(g) is not a subspace. Consider the matrices

\begin{bmatrix}1&0\\0&0\end{bmatrix},\begin{bmatrix}0&0\\0&1\end{bmatrix}

Both matrices have determinant 0, but their sum is the identity matrix with determinant 1.

4 0
4 years ago
Please help!! Will mark the brainliest
miss Akunina [59]

Answer:

5 is good plz mark me plxzzzzzzzzzzzzzzz-zzzzzzzzzzzzzzz

7 0
3 years ago
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